ASSESSMENT OF RANS, LES, AND HYBRID RANS/LES MODELS FOR THE PREDICTION OF LOW-PR TURBULENT FLOWS Conference Paper uri icon

abstract

  • The predictive capability of RANS, hybrid RANS/LES and LES turbulence models for momentum and thermal energy transfer in wall bounded low-Pr turbulent flows is investigated. Plane channel flow simulations are performed for Re = 150 and 640 for Pr = 0.025 and 0.71 with and without buoyancy effects, including both forced and mixed force/natural convection conditions, using the open source spectral element flow solver Nek5000. The prediction of one-point velocity and temperature statistics from the simulations are compared against available DNS results. Results are analyzed to understand the effect of flow conditions on turbulent thermal transport, and assess the relative strengths and weaknesses of the different modeling methods.

name of conference

  • Volume 1: Flow Manipulation and Active Control; Bio-Inspired Fluid Mechanics; Boundary Layer and High-Speed Flows; Fluids Engineering Education; Transport Phenomena in Energy Conversion and Mixing; Turbulent Flows; Vortex Dynamics; DNS/LES and Hybrid RANS/LES Methods; Fluid Structure Interaction; Fluid Dynamics of Wind Energy; Bubble, Droplet, and Aerosol Dynamics

published proceedings

  • PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2018, VOL 1

author list (cited authors)

  • Bhushan, S., ElFajri, O., Jock, W. D., Walters, D. K., Lai, J. K., Hassan, Y. A., ... Merzari, E.

citation count

  • 2

complete list of authors

  • Bhushan, S||ElFajri, O||Jock, WD||Walters, DK||Lai, JK||Hassan, YA||Jackson, R Brian||Obabko, A||Merzari, E

publication date

  • July 2018