Simcenter STAR-CCM+
Turbulence and turbulence modeling in Simcenter STAR-CCM+
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Turbulence is one of the most complex phenomena in fluids. The primary objective of this course is to revisit the fundamentals of turbulence, then move on to discuss how turbulence is modeled in simulation. It is modeled, because in most cases, direct numeric simulation (DNS) is too costly. Turbulence models allow to reduce the computational cost to get desired engineering quantities with the aid of assumptions. The majority of the course revolves around the various turbulence models, and why new models are still being developed. We will see an overview of turbulence models in Simcenter STAR-CCM+ and understand for which applications they are useful.
The turbulence and turbulence modeling course is intended for engineers or analysts who are involved in the analyses of fluid flow and heat transfer.
Required courses:
- Fundamentals of Simcenter STAR-CCM+ (ILT030005)
- Student Guide
- Activity Material
PRIMARY COURSE TOPICS
Fundamental equations and concepts
- Lesson 1: Governing equations and classification of flows
- Lesson 2: Comparing laminar and turbulent flows
- Lesson 3: Characterizing turbulent flow
- Lesson 4: Velocity profiles in turbulent flows (incl. lab)
Theoretical concepts in turbulent flows
- Lesson 5: Time and energy
Fundamental concepts of turbulence modeling
- Lesson 6: Modeling approaches
Modeling turbulence in simulation
- Lesson 7: What do we know about turbulence modeling?
- Lesson 8: Deriving and modeling Reynolds stresses
- Lesson 9: Reynolds Stress Transport (RST) model
- Lesson 10: Introducing the eddy viscosity models
- Lesson 11: Modeling Reynolds stresses using the Spalart-Allmaras model
Modeling turbulence using two-equation models
- Lesson 12: Modeling Reynolds stresses using the Standard k-Epsilon model
- Lesson 13: Modeling Reynolds stresses using the Realizable k-Epsilon model
- Lesson 14: Modeling Reynolds stresses using the k-Omega model
How is turbulence modeled at walls?
- Lesson 15: Limits of the eddy viscosity models
- Lesson 16: How to account for near wall turbulence effects?
- Lesson 17: The elliptic relaxation idea
- Lesson 18: Overview and summary of turbulence models in Simcenter STAR-CCM+
Explain what scale resolving simulations are
- Lesson 19: Large eddy simulation model
- Lesson 20: DES: Mixing RANS and LES
- Lesson 21: Switch from a RANS simulation to LES
Transition modeling
- Lesson 22: From laminar to turbulent flow