Introduction to RANS Turbulence Modeling in OpenFOAM https://WebToolTip.com Published 12/2025
MP4 | Video: h264, 1920x1080 | Audio: AAC, 44.1 KHz, 2 Ch
Language: English | Duration: 1h 54m | Size: 1.32 GB
Eddy-Viscosity Models and the Backward-Facing Step
What you'll learn
Describe the Reynolds-Averaged Navier–Stokes equations, the concept of Reynolds stresses, and the need for turbulence modeling.
Explain the Boussinesq hypothesis and how eddy-viscosity–based models close the RANS equations.
Compare Spalart–Allmaras, standard k–ε, RNG k–ε, k–ω, and SST k–ω models in terms of assumptions, strengths, and limitations.
Justify the choice of a RANS model for separated flows such as the backward-facing step.
Configure mesh, boundary conditions, turbulence properties, and solver settings for incompressible RANS simulations.
Use ParaView to extract and interpret velocity, pressure, and turbulent viscosity fields.
Describe the key ideas behind the LRR Reynolds Stress Model (RSM) and explain how it overcomes limitations of eddy-viscosity–based RANS models.
Requirements
Ability to install and run OpenFOAM on a local machine (Linux or Docker-based setup)
Basic understanding of the Navier–Stokes equations and fundamental fluid mechanics concepts
Familiarity with CFD terminology such as velocity, pressure, boundary conditions, and meshes
Elementary knowledge of numerical methods and discretization (helpful but not mandatory)
Willingness to use the Linux command line for running simulations and post-processing
Comfortable using Ubuntu Linux for nstrations; Windows and macOS users can follow along using Docker or WSL.