Скачать с ютуб RANS Turbulence Models: Which Should I Choose? в хорошем качестве

RANS Turbulence Models: Which Should I Choose?

In this video, a quick overview of the most important RANS turbulence models are presented. As you may know, a large variety of turbulence models has been developed with an attempt to close the RANS equations. This makes the choice of a suitable turbulence model for a specific simulation a bit of a challenge. Therefore, this video can be considered as a guideline for the selection of the most suitable RANS turbulence model for a specific CFD simulation. In this presentation, the strengths, and limitations of the most popular RANS turbulence models, along with their modeling assumptions and formulations, are explained. Video Outline: 0:00 - RANS Turbulence Models: A Quick Overview 1:29 - Reynolds-averaged Navier Stokes (RANS) equations 3:47 - Reynolds stress turbulence (RST) models 7:23 - Linear pressure-strain RST (LRST) model of Gibson-Launder 8:34 - Quadratic pressure-strain RST (QRST) model of Speziale-Sarkar-Gatski 9:03 - Elliptic blending RST (ERST) model of Lardeau-Manceau 10:39 - Eddy viscosity turbulence models 13:26 - Zero-equation turbulence models 13:50 - Mixing length model 15:02 - One-equation turbulence models 15:53 - Spalart-Allmaras model 18:37 - Two-equation turbulence models 20:51 - Standard k-epsilon turbulence model 22:55 - Realizable k-epsilon turbulence model 24:50 - Capturing the Near Wall Turbulence 29:55 - High-Reynolds-number turbulence models (high-Y+ wall treatment) 32:41 - Low-Reynolds-number turbulence model (low-Y+ wall treatment) 33:09 - Low Reynolds number approach (Standard k-epsilon low Reynolds number model, Abe-Kondoh-Nagano K-Epsilon low Reynolds number model) 35:34 - Two-layer approach (Two-layer k-epsilon turbulence model) 37:57 - Elliptic-blending approach (v2-f k-epsilon model, Billard and Laurence k-epsilon model) 43:00 - k-omega turbulence model 45:16 - K-omega Shear Stress Transport (SST) model 47:07 - Final notes on eddy viscosity models 48:16 - Nonlinear quadratic and cubic eddy viscosity models (Explicit Algebraic Reynolds Stress Turbulence (EARST) Models)