Ugo Piomelli PhD, FRSC, FAPS, FASME, FCAE

Academic: 

• Professor (August 2008-Present) 
• Tier I Canada Research Chair in Turbulence Simulaiton and Modelling (2008-2022)
• HPCVL-Sun Microsystem Chair in Computational Science and Engineering (2008-2015)

• Professor (July 2000-July 2008) 
• Associate Chair (July 2002-July 2006) 
• Associate Professor (July 1993) 
• Assistant Professor (December 1987)
  

Education: 

• Dr. Ing., Aerospace Engineering, Università degli Studi di Napoli, 1979. 
• MASc, Aerospace Engineering, University of Notre Dame, 1984. 
• PhD, Mechanical Engineering, Stanford University, 1988. 

Fellowships: 

• American Physical Society (APS), Fellow, 2002. 
• American Institute of Aeronautics and Astronautics (AIAA),  Associate Fellow, 2004. 
• American Society of Mechanical Engineers (ASME), Fellow, 2009. 
• Royal Society of Canada (RSC), Fellow, 2015. 
• Canadian Academy of Engineering (CAE), Fellow, 2021

Research Interests  

• Large eddy and direct simulations 
• Turbulence simulations and modelling 
• Transition modelling 
• Computational fluid dynamics 
• Geophysical flows 
• Bio fluid dynamics 

Watch the 2019 John Adjeleian Lecture:  
The good, the bad and the beautiful:  
Leonardo's studies of turbulence.  
Carleton University, April 10, 2019. 

Leonardo da Vinci, ca. 1510 

What is LES? 

The prediction and control of fluid flows over solid bodies is very important from a technological point of view: both the performance and observability of aircraft, surface or submerged vessels, or automobiles, for instance, are very much affected by the flow patterns around the body itself. In many instances, in fact, the aerodynamic (or hydrodynamic) loads are the main source of noise, drag or unsteadiness. 

The main obstacle in the prediction of flows is the presence of turbulent motions. These motions can be calculated quite accurately by a numerical solution of the complete set of equations of motion, the Navier-Stokes equations, albeit at costs that are prohibitively high, except for very simple configurations in conditions quite different from those encountered in realistic applications. Any simplified model developed so far, although applicable in realistic cases, requires ad hoc adjustments that are case-dependent. This is due to the fact that turbulent motions in general are strongly affected by the flow configuration, and cannot be reliably described by universal models. 

It has been observed, however, that the smallest turbulent motions are more universal than the large ones. If one could develop reliable models for the small turbulent eddies, the numerical solution of the Navier-Stokes equations would be greatly simplified, and its cost decreased by several orders of magnitude. 

These considerations form the foundations of, and the motivation for, the technique known as large-eddy simulation (LES). In LES the small turbulent eddies are modeled, and only the motion of the large ones is computed numerically. LES may very well be the only technique capable of predicting some particularly complex flows, especially if three-dimensional effects or unsteadiness are present in the mean. 

                               

Selected Publications 

• G. D’Alessandro, Z. Hantsis, C. Marchioli, and U. Piomelli. Accuracy of bed-load transport models in eddy-resolving simulations. Int. J. Multiphase Flow, 141:103676–1–16, 2021. 
  doi: https://doi.org/10.1016/j.ijmultiphaseflow.2021.103676 

• V. Kumar, U. Piomelli, and O. Lehmkuhl. Large-eddy simulations of the flow on an airfoil with leading- edge imperfections. J. Turb., 22(11):735–760, 2021. 
  doi: https://doi.org/10.1080/14685248.2021.1973015  

• Z. Hantsis, U. Piomelli. Roughness effects on scalar transport. Phys. Rev. Fluids, 5:114607, 2020.  
  doi: https://doi.org/10.1103/PhysRevFluids.5.114607 

• W. Wu, U. Piomelli, and J. Yuan. Turbulence statistics in rotating channel flows with rough walls. Int. J. Heat Fluid Flow, 80(108467):1–13, 2019. doi: https://doi.org/10.1016/j.ijheatfluidflow.2019.108467. 

• B. J. Geurts, A. Rouhi, U. Piomelli. Recent progress on reliability assessment of large-eddy simulation. J. Fluids Struct., 91(102615):1–13, 2019.  
  doi: https://doi.org/10.1016/j.jfluidstructs.2019.03.008, 2019. 

• O. Lehmkuhl, U. Piomelli, and G. Hozeaux. On the extension of the integral length-scale approximation model to complex geometries. Int. J. Heat Fluid Flow, 78(108422):1–12, 2019. doi:10.1016/j.ijheatfluidflow.2019.108422 

• M. Mellati Nokhandan, U. Piomelli, and M. Omidyeganeh. Large-eddy and wall-modelled simulations of turbulent flow over two-dimensional river dunes. Phys. Chem. Earth, 113:123–131, 2019.  
  doi: https://doi.org/10.1016/j.pce.2018.11.004 

• U. Piomelli. Recent advances in the numerical simulation of rough-wall boundary layers. Phys. Chem. Earth, 113:63–72, 2019. doi: https://doi.org/10.1016/j.pce.2018.10.005. 

• Rodrıguez, O. Lehmkuhl, U. Piomelli, J. Chiva, R. Borell, and A. Oliva. LES-based study of the roughness effects on the wake of a circular cylinder from subcritical to transcritical Reynolds numbers. Flow, Turb. Combust., 99:729–763, 2017. doi: 10.1007/s10494-017-9866-2 

• W. Wu and U. Piomelli. Effects of surface roughness on a separating turbulent boundary layer. J. Fluid Mech., 841:552–580, 2018. doi:10.1017/jfm.2018.101 

• W. Wu, G. Soligo, C. Marchioli, A. Soldati, and U. Piomelli. Particle resuspension by a periodically forced impinging jet. J. Fluid Mech., 820:284–311, 2017. doi:10.1017/jfm.2017.210 

• R. Dutta, J. Nicolle, A.-M. Giroux, and U. Piomelli. Evaluation of turbulence models in rough-wall boundary layers for hydroelectric application. Int. J. Fluid Mach. Sys., 10(3):228–239, 2017. doi:10.5293/IJFMS.2017.10.3.227 

• Rouhi, U. Piomelli, and B. J. Geurts. A dynamic subfilter-scale stress model for large eddy simulations. Phys. Rev. Fluids, 1(4):044401–1–26, 2016. doi:10.1103/PhysRevFluids.1.044401 

• W. Wu, R. Banyassady, and U. Piomelli. Large-eddy simulation of impinging jets on smooth and rough surfaces. J. Turbul., 17(7):1–23, 2016. doi:10.1080/14685248.2016.1181761 

• W. Wu and U. Piomelli. Reynolds-averaged and wall-modelled large-eddy simulations of impinging jets with embedded azimuthal vortices. Eur. J. Mech. B: Fluids, 55, part 2:348–359, 2016. doi:10.1016/j.euromechflu.2015.06.008 

• W. Wu, U. Piomelli. Reynolds-averaged and wall-modelled large-eddy simulations of impinging jets with embedded azimuthal vortices. European J. Mech./B Fluids, 55, part 2:348–359, 2016. http://dx.doi.org/10.1016/j.euromechflu.2015.06.008 

• J. Yuan and U. Piomelli. Numerical simulations of accelerating boundary layers over roughness. J. Fluid Mech., 780:192–214, 2015. http://dx.doi.org/10.1017/jfm.2015.437 

• R. Banyassady and U. Piomelli. Interaction of inner and outer layers in plane and radial wall-jets. J. Turbul., 16(5):460–483, 2015. http://dx.doi.org/10.1080/14685248.2015.1008008. 

• Jabbari, L. Boegman, and U. Piomelli. Evaluation of the inertial dissipation method within boundary layers using numerical simulations. Geophys. Res. Lett., 42:1504–1511, 2015. http://dx.doi.org/10.1002/2015GL063147. 

• U. Piomelli, A. Rouhi, and B. J. Geurts. A grid- independent length scale for large-eddy simulations. J. Fluid Mech., 766:499–527, 2015. http://dx.doi.org/10.1017/jfm.2015.29. 

• Silva Lopes, J. M. L. M. Palma, and U. Piomelli. On the determination of effective roughness of surfaces with vegetation patches. Bound.-Lay. Meteorol., 156:113–131, 2015. http://dx.doi.org/10.1007/s10546-015-0022-z 

• Skillen, A. Revell, A. Pinelli, U. Piomelli, and J. Favier. Flow over a wing with leading-edge undulations. AIAA J., 53(2):464–472, 2015. http://dx.doi.org/10.2514/1.J053142 

• W. Wu, U. Piomelli. Large-eddy simulation of impinging jets with embedded azimuthal vortices. J. Turbul., 16(1):44–66, 2014.   http://dx.doi.org/10.1080/14685248.2014.957383 

• J. Yuan and U. Piomelli. Roughness effects on the Reynolds stress budgets in near-wall turbulence. J. Fluid Mech., 760:R1–1–12, 2014. http://dx.doi.org/10.1017/jfm.2014.608 

• R. Banyassady and U. Piomelli. Turbulent plane wall-jets over smooth and rough surfaces. J. Turbul., 15(3):186–207, 2014. http://dx.doi.org/10.1080/14685248.2014.888492 

• U. Piomelli. Large eddy simulations in 2030 and beyond. Phil. Trans. R. Soc. A, 372(20130320):1–13, 2014. http://dx.doi.org/10.1098/rsta.2013.0320 

• J. Yuan and U. Piomelli. Estimation and prediction of the roughness function on realistic surfaces. J. Turbul., 15(6):350–365, 2014. http://dx.doi.org/10.1080/14685248.2014.907904 

• J. Yuan and U. Piomelli. Numerical simulations of sink-flow boundary layers over rough surfaces. Phys. Fluids, 26:015113–1–28, 2014. http://dx.doi.org/10.1063/1.4862672 

• M. Omidyeganeh and U. Piomelli. Large-eddy simulation of three- dimensional dunes in a steady, unidirectional flow. Part 1: Turbulence statistics. J. Fluid Mech., 721: 454-483, 2013. http://dx.doi.org/10.1017/jfm.2013.36 

• M. Omidyeganeh and U. Piomelli. Large-eddy simulation of three- dimensional dunes in a steady, unidirectional flow. Part 2: Flow structures. J. Fluid Mech., 734:509-534, 2013b. http://dx.doi.org/10.1017/jfm.2013.499. 

• M. Omidyeganeh, U. Piomelli, K. T. Christensen, and J. L. Best. Large eddy simulation of interacting barchan dunes in a steady, unidirectional flow. J. Geophys. Res.: Earth Surface, 118:1-16, 2013. http://dx.doi.org/10.1002/jgrf.20149 

• U. Piomelli and J. Yuan. Numerical simulations of spatially developing, accelerating boundary layers. Phys. Fluids, 25:101304-1-21, 2013. http://dx.doi.org/10.1063/1.4825033 

• Rouhi, U. Piomelli, and P. Vlachos. Numerical investigation of pulsatile flow in endovascular stents. Phys. Fluids, 25:091905-1-18, 2013. http://dx.doi.org/10.1063/1.4821618 

• Scalo, L. Boegman, and U. Piomelli. Large-eddy simulation and low-order modeling of sediment oxygen uptake in a transitional oscillatory flow. J. Geophys. Res.: Oceans, 118:1-14, 2013.  http://dx.doi.org/10.1002/jgrc.20113 

• Scalo, U. Piomelli, and L. Boegman. Self-similar decay and mixing of a high-Schmidt-number passive scalar in an oscillating boundary layer in the intermittently turbulent regime. J. Fluid Mech., 726(338-370), 2013.  http://dx.doi.org/10.1017/jfm.2013.228 

• Ford, M. D. and Piomelli, U. "Exploring high frequency temporal fluctuations in the terminal aneurysm of the basilar bifurcation." J. Biomech. Eng., 134:091003-1-10, 2012. 

• Lee, G., Scalo, C., and Piomelli, U. "A simple technique for the visualisation of eddy kinematics in turbulent flows." Int. J. Comput. Fluid Dyn., 26(4):263-274, 2012. 

• Scalo, U. Piomelli and L. Boegman, "High- Schmidt-number mass transport mechanisms from a turbulent flow to absorbing sediments." Phys. Fluids24, 085103, pp. 1-16, 201 

• Scalo, U. Piomelli and L. Boegman, "Large-eddy simulation of oxygen transfer to organic sediment beds." J. Geophys. Res.-Oceans117, C06005, pp. 1-17, 2012. 

• J. Favier, A. Pinelli and U. Piomelli, "Control of the separated flow around an airfoil using a wavy leading edge inspired by humpback whale flippers," Compte Rendus-Mecanique, 340(1-2), pp. 107-114, 2012. 

• M. D. Ford, A. T. Black, R. Y. Cao, C. D. Funk and U. Piomelli "Hemodynamics of the mouse abdominal aortic aneurysm". J. Biomech. Eng.133 (12), 121008, pp. 1-9, 2011. 

• M. Omidyeganeh and U. Piomelli, "Large-eddy simulation of two-dimensional dunes in a steady, unidirectional flow," J. Turbul. 12(N42), 1--31, 2011 

• H. Raiesi, U. Piomelli and A. Pollard, "Evaluation of turbulence models using large-eddy simulation data," ASME J. Fluids Eng.133 (3), 0212203-1-10, 2011. 

• Pinelli, I. Naqavi, U. Piomelli, and J. Favier, "Immersed-boundary methods for general finite- difference and finite-volume navier-stokes solvers," J. Comput. Phys.229, 9073--9091, doi:10.1016/j.jcp.2010.08.021, 2010 

• M. Li, S. Radhakrishnan, U. Piomelli, and W. R. Geyer, "Large-eddy simulation of the tidal-cycle variations of an estuarine boundary layer," J. Geophys. Res.115, C08003, pp. 1-18, 2010. 

• Vanella, M., Piomelli, U. and Balaras, E., "Effect of grid discontinuities in large-eddy simulation statistics and flow fields," J. Turbul.9, 32, 1-23, 2008. 

• Piomelli, U., "Wall-layer models for large-eddy simulations," Prog. Aerosp. Sci. 44, 6, 437-446, 2008. 

• Ovchinnikov, V., Choudhari, M.M., and Piomelli, U., "Numerical simulations of boundary-layer bypass transition due to high-amplitude free- stream turbulence," J. Fluid Mech613, 135-169, 2008. 

• Radhakrishnan, S. and Piomelli, U., "Large-eddy simulation of oscillating boundary layers: model comparison and validation," J. Geophys. Res.113, C02022, 1-14, 2008. 

• Radhakrishnan, S., Piomelli, U., Keating, A., and Silva Lopes, A., "Reynolds-averaged and large-eddy simulations of turbulent non-equilibrium flows," J. Turbul.7, 63, 1-30, 2006. 
• Ovchinnikov, V., Piomelli, U., and Choudhari, M. M., "Numerical simulations of boundary-layer transition induced by a cylinder wake," J. Fluid Mech.547, 413-441, 2006. 

Extended Publications 

Journal Articles 

• G. D’Alessandro, Z. Hantsis, C. Marchioli, and U. Piomelli. Accuracy of bed-load transport models in G. D’Alessandro, Z. Hantsis, C. Marchioli, and U. Piomelli. Accuracy of bed-load transport models in eddy-resolving simulations. Int. J. Multiphase Flow, 141:103676–1–16, 2021. 
  doi: https://doi.org/10.1016/j.ijmultiphaseflow.2021.103676 

• V. Kumar, U. Piomelli, and O. Lehmkuhl. Large-eddy simulations of the flow on an airfoil with leading- edge imperfections. J. Turb., 22(11):735–760, 2021. 
  doi: https://doi.org/10.1080/14685248.2021.1973015  

• Z. Hantsis, U. Piomelli. Roughness effects on scalar transport. Phys. Rev. Fluids, 5:114607, 2020. https://doi.org/10.1103/PhysRevFluids.5.114607 

• W. Wu, U. Piomelli, and J. Yuan. Turbulence statistics in rotating channel flows with rough walls. Int. J. Heat Fluid Flow, 80(108467):1–13, 2019. doi: https://doi.org/10.1016/j.ijheatfluidflow.2019.108467. 

• B. J. Geurts, A. Rouhi, and U. Piomelli. Recent progress on reliability assessment of large-eddy simulation. J. Fluids Struct., 91(102615):1–13, 2019. https://doi.org/10.1016/j.jfluidstructs.2019.03.008, 2019. 

• O. Lehmkuhl, U. Piomelli, and G. Hozeaux. On the extension of the integral length-scale approximation model to complex geometries. Int. J. Heat Fluid Flow, 78(108422):1–12, 2019. doi:10.1016/j.ijheatfluidflow.2019.108422 

• M. Mellati Nokhandan, U. Piomelli, and M. Omidyeganeh. Large-eddy and wall-modelled simulations of turbulent flow over two-dimensional river dunes. Phys. Chem. 113:123–131 2019. https://doi.org/10.1016/j.pce.2018.11.004 

• U. Piomelli. Recent advances in the numerical simulation of rough-wall boundary layers. Phys. Chem. Earth, 113:63–72, 2019. https://doi.org/10.1016/j.pce.2018.10.005, 2019. 

• I. Rodrıguez, O. Lehmkuhl, U. Piomelli, J. Chiva, R. Borell, and A. Oliva. LES-based study of the roughness effects on the wake of a circular cylinder from subcritical to transcritical Reynolds numbers. Flow, Turb. Combust., 99:729–763, 2017. doi: 10.1007/s10494-017-9866-2 

• W. Wu and U. Piomelli. Effects of surface roughness on a separating turbulent boundary layer. J. Fluid Mech., 841:552–580, 2018. doi:10.1017/jfm.2018.101 

• W. Wu, G. Soligo, C. Marchioli, A. Soldati, and U. Piomelli. Particle resuspension by a periodically forced impinging jet. J. Fluid Mech., 820:284–311, 2017. doi:10.1017/jfm.2017.210 

• R. Dutta, J. Nicolle, A.-M. Giroux, and U. Piomelli. Evaluation of turbulence models in rough-wall boundary layers for hydroelectric application. Int. J. Fluid Mach. Sys., 10(3):228–239, 2017. doi:10.5293/IJFMS.2017.10.3.227 

• A. Rouhi, U. Piomelli, and B. J. Geurts. A dynamic subfilter-scale stress model for large eddy simulations. Phys. Rev. Fluids, 1(4):044401–1–26, 2016. doi:10.1103/PhysRevFluids.1.044401 

• W. Wu, R. Banyassady, and U. Piomelli. Large-eddy simulation of impinging jets on smooth and rough surfaces. J. Turbul., 17(7):1–23, 2016. doi:10.1080/14685248.2016.1181761 

• W. Wu and U. Piomelli. Reynolds-averaged and wall-modelled large-eddy simulations of impinging jets with embedded azimuthal vortices. Eur. J. Mech. B: Fluids, 55, part 2:348–359, 2016. doi:10.1016/j.euromechflu.2015.06.008 

• W. Wu, U. Piomelli. Reynolds-averaged and wall-modelled large-eddy simulations of impinging jets with embedded azimuthal vortices. European J. Mech./B Fluids, 55, part 2:348–359, 2016. http://dx.doi.org/10.1016/j.euromechflu.2015.06.008 

• J. Yuan and U. Piomelli. Numerical simulations of accelerating boundary layers over roughness. J. Fluid Mech., 780:192–214, 2015. http://dx.doi.org/10.1017/jfm.2015.437 

• R. Banyassady and U. Piomelli. Interaction of inner and outer layers in plane and radial wall-jets. J. Turbul., 16(5):460–483, 2015. http://dx.doi.org/10.1080/14685248.2015.1008008. 

• A. Jabbari, L. Boegman, and U. Piomelli. Evaluation of the inertial dissipation method within boundary layers using numerical simulations. Geophys. Res. Lett., 42:1504–1511, 2015. http://dx.doi.org/10.1002/2015GL063147. 

• U. Piomelli, A. Rouhi, and B. J. Geurts. A grid- independent length scale for large-eddy simulations. J. Fluid Mech., 766:499–527, 2015. http://dx.doi.org/10.1017/jfm.2015.29. 

• A. Silva Lopes, J. M. L. M. Palma, and U. Piomelli. On the determination of effective roughness of surfaces with vegetation patches. Bound.-Lay. Meteorol., 156:113–131, 2015. http://dx.doi.org/10.1007/s10546-015-0022-z 

• A. Skillen, A. Revell, A. Pinelli, U. Piomelli, and J. Favier. Flow over a wing with leading-edge undulations. AIAA J., 53(2):464–472, 2015. http://dx.doi.org/10.2514/1.J053142 

• W. Wu, U. Piomelli. Large-eddy simulation of impinging jets with embedded azimuthal vortices. J. Turbul., 16(1):44–66, 2014.   http://dx.doi.org/10.1080/14685248.2014.957383 

• J. Yuan and U. Piomelli. Roughness effects on the Reynolds stress budgets in near-wall turbulence. J. Fluid Mech., 760:R1–1–12, 2014. http://dx.doi.org/10.1017/jfm.2014.608 

• R. Banyassady and U. Piomelli. Turbulent plane wall-jets over smooth and rough surfaces. J. Turbul., 15(3):186–207, 2014. http://dx.doi.org/10.1080/14685248.2014.888492 

• U. Piomelli. Large eddy simulations in 2030 and beyond. Phil. Trans. R. Soc. A, 372(20130320):1–13, 2014. http://dx.doi.org/10.1098/rsta.2013.0320 

• J. Yuan and U. Piomelli. Estimation and prediction of the roughness function on realistic surfaces. J. Turbul., 15(6):350–365, 2014. http://dx.doi.org/10.1080/14685248.2014.907904 

• J. Yuan and U. Piomelli. Numerical simulations of sink-flow boundary layers over rough surfaces. Phys. Fluids, 26:015113–1–28, 2014. http://dx.doi.org/10.1063/1.4862672 

• M. Omidyeganeh and U. Piomelli. Large-eddy simulation of three- dimensional dunes in a steady, unidirectional flow. Part 1: Turbulence statistics. J. Fluid Mech., 721: 454-483, 2013. http://dx.doi.org/10.1017/jfm.2013.36 

• M. Omidyeganeh and U. Piomelli. Large-eddy simulation of three- dimensional dunes in a steady, unidirectional flow. Part 2: Flow structures. J. Fluid Mech., 734:509-534, 2013b. http://dx.doi.org/10.1017/jfm.2013.499. 

• M. Omidyeganeh, U. Piomelli, K. T. Christensen, and J. L. Best. Large eddy simulation of interacting barchan dunes in a steady, unidirectional flow. J. Geophys. Res.: Earth Surface, 118:1-16, 2013. http://dx.doi.org/10.1002/jgrf.20149 

• U. Piomelli and J. Yuan. Numerical simulations of spatially developing, accelerating boundary layers. Phys. Fluids, 25:101304-1-21, 2013. http://dx.doi.org/10.1063/1.4825033 

• A. Rouhi, U. Piomelli, and P. Vlachos. Numerical investigation of pulsatile flow in endovascular stents. Phys. Fluids, 25:091905-1-18, 2013. http://dx.doi.org/10.1063/1.4821618 

• C. Scalo, L. Boegman, and U. Piomelli. Large-eddy simulation and low-order modeling of sediment oxygen uptake in a transitional oscillatory flow. J. Geophys. Res.: Oceans, 118:1-14, 2013.  http://dx.doi.org/10.1002/jgrc.20113 

• C. Scalo, U. Piomelli, and L. Boegman. Self-similar decay and mixing of a high-Schmidt-number passive scalar in an oscillating boundary layer in the intermittently turbulent regime. J. Fluid Mech., 726(338-370), 2013.  http://dx.doi.org/10.1017/jfm.2013.228 

• Ford, M. D. and Piomelli, U. "Exploring high frequency temporal fluctuations in the terminal aneurysm of the basilar bifurcation." J. Biomech. Eng., 134:091003-1-10, 2012. 

• Lee, G., Scalo, C., and Piomelli, U. "A simple technique for the visualisation of eddy kinematics in turbulent flows." Int. J. Comput. Fluid Dyn., 26(4):263-274, 2012. 

• C. Scalo, U. Piomelli and L. Boegman, "High- Schmidt-number mass transport mechanisms from a turbulent flow to absorbing sediments." Phys. Fluids24, 085103, pp. 1-16, 201 

• C. Scalo, U. Piomelli and L. Boegman, "Large-eddy simulation of oxygen transfer to organic sediment beds." J. Geophys. Res.-Oceans117, C06005, pp. 1-17, 2012. 

• J. Favier, A. Pinelli and U. Piomelli, "Control of the separated flow around an airfoil using a wavy leading edge inspired by humpback whale flippers," Compte Rendus-Mecanique, 340(1-2), pp. 107-114, 2012. 

• M. D. Ford, A. T. Black, R. Y. Cao, C. D. Funk and U. Piomelli "Hemodynamics of the mouse abdominal aortic aneurysm". J. Biomech. Eng.133 (12), 121008, pp. 1-9, 2011. 

• M. Omidyeganeh and U. Piomelli, "Large-eddy simulation of two-dimensional dunes in a steady, unidirectional flow," J. Turbul. 12(N42), 1--31, 2011 

• H. Raiesi, U. Piomelli and A. Pollard, "Evaluation of turbulence models using large-eddy simulation data," ASME J. Fluids Eng.133 (3), 0212203-1-10, 2011. 

• A. Pinelli, I. Naqavi, U. Piomelli, and J. Favier, "Immersed-boundary methods for general finite- difference and finite-volume navier-stokes solvers," J. Comput. Phys.229, 9073--9091, doi:10.1016/j.jcp.2010.08.021, 2010 

• M. Li, S. Radhakrishnan, U. Piomelli, and W. R. Geyer, "Large-eddy simulation of the tidal-cycle variations of an estuarine boundary layer," J. Geophys. Res.115, C08003, pp. 1-18, 2010. 

• Vanella, M., Piomelli, U. and Balaras, E., "Effect of grid discontinuities in large-eddy simulation statistics and flow fields," J. Turbul.9, 32, 1-23, 2008. 

• Piomelli, U., "Wall-layer models for large-eddy simulations," Prog. Aerosp. Sci. 44, 6, 437-446, 2008. 

• Ovchinnikov, V., Choudhari, M.M., and Piomelli, U., "Numerical simulations of boundary-layer bypass transition due to high-amplitude free- stream turbulence," J. Fluid Mech613, 135-169, 2008. 

• Radhakrishnan, S. and Piomelli, U., "Large-eddy simulation of oscillating boundary layers: model comparison and validation," J. Geophys. Res.113, C02022, 1-14, 2008. 

• Radhakrishnan, S., Piomelli, U., Keating, A., and Silva Lopes, A., "Reynolds-averaged and large-eddy simulations of turbulent non-equilibrium flows," J. Turbul.7, 63, 1-30, 2006. 

• Ovchinnikov, V., Piomelli, U., and Choudhari, M. M., "Numerical simulations of boundary-layer transition induced by a cylinder wake," J. Fluid Mech.547, 413-441, 2006. 

Books (Chapters) 

• U. Piomelli “Large-eddy simulation of turbulent flows. Part I: Introduction.” In Introduction to turbulence modelling, eds. U. Piomelli, and J. van Beeck, (Von K ́arm ́an Institute, Rhode-Saint- Genese), 2018. 

• U. Piomelli “Large-eddy simulation of turbulent flows. Part II: Hybrid RANS/LES methods.” In Introduction to turbulence modelling, eds. U. Piomelli, and J. van Beeck, (Von Karman Institute, Rhode-Saint-Genese), 2018.  

• U. Piomelli “Large-eddy simulation of turbulent flows. Part I: Introduction.” In Introduction to turbulence modelling, eds. U. Piomelli, C. Benocci and J. van Beeck, (Von Karman Institute, Rhode-Saint-Genese), 2016.  

• U. Piomelli “Large-eddy simulation of turbulent flows. Part II: Hybrid RANS/LES methods.” In Introduction to turbulence modelling, eds. U. Piomelli, C. Benocci and J. van Beeck, (Von Karman Institute, Rhode-Saint-Genese), 2016.  

• R. Dutta, J. Nicolle, A.-M. Giroux, and U. Piomelli. Evaluation of turbulence models on roughened turbine blades. In R. F. Patella, editor, 28th IAHR symposium on Hydraulic Machinery and Systems (IAHR2016), volume 49 of IOP Conference Series: Earth and Environmental Science (EES), pages 062007–1–10. Institute of Physics, IOP Publishing, 2016. 

• P. Mottaghian, J. Yuan, and U. Piomelli. Boundary layer separation under strong adverse pressure gradient over smooth and rough walls. In Direct and Large-Eddy Simulation X, eds. D. G. E. Grigoriadis, B. J. Geurts, H. Kuerten, J. Froehlich, and V. Armenio. Springer International Publishing AG, 2016. 

• U. Piomelli “Large-eddy simulation of turbulent flows. Part I: Introduction.” In Introduction to turbulence modelling, eds. U. Piomelli, C. Benocci and J. van Beeck, (Von Karman Institute, Rhode-Saint-Genese), 2014. 

• U. Piomelli “Large-eddy simulation of turbulent flows. Part II: Hybrid RANS/LES methods.” In Introduction to turbulence modelling, eds. U. Piomelli, C. Benocci and J. van Beeck, (Von Karman Institute, Rhode-Saint-Genese), 2014.  

• U. Piomelli, "Wall-modeled LES: Present status and prospects," (p. 1-10) in Direct and Large-Eddy Simulation VII,, V. Armenio, B. J. Geurts, and J. Fröhlich, ed(s)., Springer, 2010. 

• Piomelli, U., Radhakrishnan, S., and De Prisco, G., "Turbulent eddies in the RANS/LES transition region," Ch. 97, (p. 21-36) in Advances in hybrid RANS/LES modeling, Peng, S.-H. and Haase, W., ed(s)., Springer, Berlin, 2008. 

• Piomelli, U., Radhakrishnan, S., Zhong, L. and Li, M., "Wall-layer models for large-eddy simulations of high Reynolds number non-equilibrium flows," (p. 47-54) in Advances in Turbulence XI, Palma, J. M. L. M. and Silva Lopes, A., ed(s)., Springer, Berlin, 2007. 

• De Prisco, G., Keating, A., Piomelli, U., and Balaras, E., "Large-eddy simulation of accelerating boundary layers," (p. 137-144) in Progress in Turbulence II, Oberlack, M.; Khujadze, G.; Guenther, S.; Weller, T.; Frewer, M.; Peinke, J.; Barth, S., ed(s)., Springer, Berlin, 2007. 

• Cubero, A. and Piomelli, U., "Large-eddy simulations of channel flows with variable filter-width-to-grid-size ratios," (p. 151-158) in Direct and Large-Eddy Simulation VI, E. Lamballais, R. Friedrich, B. J. Geurts, and O. Mètais, ed(s)., Kluwer, Dordrecht, 2006. 

• Toschi, F., Kobayashi, H., Piomelli, U., and Laccarino, G., "Backward-facing step calculations using the shear improved Smagorinsky model," (p. 87-97) in Studying turbulence using numerical databases XI, Stanford University, Stanford (CA), 2006. 

• Piomelli, U., Kang, S., Ham, F., and Laccarino, G., "Effect of discontinuous filter width in large-eddy simulations of plane channel flow," (p. 151-162) in Studying turbulence using numerical databases XI, Stanford University, Stanford (CA), 2006. 

• Keating, A., De Prisco, G., Piomelli, U., and Balaras, E., "Interface conditions for hybrid RANS/LES simulations," (p. 349-358) in Engineering Turbulence Modeling and Experiments 6, Rodi, W. and Mulas, M., ed(s)., Elsevier, Amsterdam, 2005. 

• Silva Lopes, A., Piomelli, U., and Palma, J.M.L.M., "Large-eddy simulation of a flow with curvatures using wall-models," (p. 249-252) in Advances in turbulence X, H.I. Andersson and P.A. Krogstad, ed(s)., Kluwer, Dordrecht, 2004. 

• Silva Lopes, A., Piomelli, U., and Palma, J. M. L. M., "LES of a flow with multiple streamwise curvatures," (p. 537-544) in Direct and Large-Eddy Simulation V, R. Friedrich, B. J. Geurts and O. Mètais, ed(s)., Kluwer, Dordrecht, 2004. 

Conference Proceedings 

• U. Piomelli, W. Wu and J. Yuan. Effect of roughness on wall-bounded flows subjected to spanwise rotation. Proc. 12th Int. ERCOFTAC Symp. Eng. Turbulence Modelling and Measurements, Montpellier, France, 26-28 September 2018. 

• O. Lehmkuhl, U. Piomelli, G. Houzeaux. On the extension of the Integral Length-Scale Approxi- mation model to complex geometries. Proc. 12th Int. ERCOFTAC Symp. Eng. Turbulence Mod- elling and Measurements, Montpellier, France, 26-28 September 2018.  

• J. Yuan, J. Nicolle, U. Piomelli, and A.-M. Giroux. Modelling roughness and acceleration effects with application to the flow in a hydraulic turbine. Paper 2536013, 27th IAHR Symposium, 2014. 

• A. Skillen, A. Revell, J. Favier, A. Pinelli, and U. Piomelli. LES study into the flow physics of an undulating leading-edged wing. In ERCOFTAC international symposium on Unsteady separation in fluid-structure interaction. Mykonos, Greece., 2013. 

• A. Skillen, A. Revell, A. Pinelli, and U. Piomelli. Investigation of wing stall delay effect due to an undulating leading edge: An LES study. In Eighth International Symposium On Turbulence and Shear Flow Phenomena (TSFP-8), 2013. 

• J. Yuan and U. Piomelli. Large-eddy and direct simulations of sink flows over rough walls. In Eighth International Symposium On Turbulence and Shear Flow Phenomena (TSFP-8), 2013. 

• J. Yuan and U. Piomelli. Studies of near-wall effects of realistic roughness using immersed boundary method based on the volume-of-fluid approach. In Joint EUROMECH/ERCOFTAC Colloquium 549 “Immersed Boundary Methods: Current Status and Future Research Directions”, Leiden, the Netherlands, June 17–19, 2013., 2013. 

• U. Piomelli and M. Omidyeganeh. Large-eddy simulations in dune- dynamics research. In V. Van Lancker and J. Best, editors, Marine and River Dune Dynamics - MARID IV, 2013. 

• M. Omidyeganeh, U. Piomelli, K. T. Christensen, and J. L. Best. Large-eddy simulation of flow over barchan dunes. In V. Van Lancker and J. L. Best, editors, Marine and River Dune Dynamics - MARID IV, 2013. 

• U. Piomelli and M. Omidyeganeh. Numerical simulation of three- di- mensional transverse dunes. In R. Verzicco, editor, Proc. 9th European Fluid Mechanics Conference, 2012. 

• J. Yuan and U. Piomelli. Large-eddy simulation of accelerating boundary layers over rough surfaces. In S. Tavoularis, editor, Proc. TSFP7, 2011. 

• A. Pinelli, I. Z. Naqavi, and U. Piomelli, "Immersed boundary method for generalised finite volume and finite difference navier-stokes solvers," Proc. ASME 2010 3rd Joint US-European Fluids Eng. Summer Meeting & 8th International Conf. on Nanochannels, Microchannels, and Minichannels, Paper FEDSM- ICNMM2010-30529, 2010. 

• M. D. Ford, U. Piomelli, C. D. Funk, R. F. Yao, and A. Pollard, "Numerical simulations of the intra- aneurysmal vortex shedding in induced mouse abdominal aortic aneurysms," Proc. ASME 2010 3rd Joint US-European Fluids Eng. Summer Meeting & 8th International Conf. on Nanochannels, Microchannels, and Minichannels, Paper FEDSM-ICNMM2010-30546, August, 2010. 

• Piomelli, U., "Wall-layer models for LES," AIAA Paper 2008-0603, 2008. 

• De Prisco, G., Keating, A., and Piomelli, U., "Large-eddy simulation of accelerating boundary layers," AIAA Paper 2007-0725, 2007. 

• Radhakrishnan, S., Keating, A., Piomelli, U., and Silva Lopes, A., "Large-eddy simulations of high Reynolds-number flow over a contoured ramp," AIAA Paper 2006-0899, 2006. 

• Silva Lopes, A., Piomelli, U., and Palma, J. M. L. M., "Large-eddy simulation of a flow with streamwise curvature changes," AIAA Paper 2004-2549, 2004. 

• Ovchinnikov, V., Piomelli, U., and Choudhari, M. M., "Inflow conditions for numerical simulations of bypass transition," AIAA Paper 2004-0591, 2004. 

• Keating, A. and Piomelli, U., "Synthetic generation of inflow velocities for large-eddy simulation," AIAA Paper 2004-2547, 2004. 

• Silva Lopes, A., Piomelli, U., and Palma, J. M. L. M., "Large eddy simulation of the flow in an S-duct," AIAA Paper 2003-0964 , 2003. 

• Piomelli, U., Choudhari, M. M., Ovchinnikov, V., and Balaras, E., "Numerical simulations of wake/boundary layer interactions," AIAA Paper 2003-0975, 2003.