Difference between revisions of "Day 7"

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Welcome back to Day 7. Today we will make another big step in the direction of real life problems by learning about turbulence modeling. Most of the fluid dynamic problems are turbulent and it is of utmost importance how to model it and how to include the models into you simulation setup. Today we will cover
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* steady-state turbulence modeling
 +
* transient turbulence modeling
 +
* Reynolds-Averaged Navier-Stokes equations
 +
* Large Eddy Simulations
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* boundary conditions
 +
 
Go back to [https://wiki.openfoam.com/index.php?title=%223_weeks%22_series "3 weeks" series].
 
Go back to [https://wiki.openfoam.com/index.php?title=%223_weeks%22_series "3 weeks" series].
  
 
=[https://wiki.openfoam.com/IcoFoam_and_pisoFoam_by_Hakan_Nilsson icoFoam and pisoFoam by Håkan Nilsson]=
 
=[https://wiki.openfoam.com/IcoFoam_and_pisoFoam_by_Hakan_Nilsson icoFoam and pisoFoam by Håkan Nilsson]=
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To kick the day off, this tutorial gives a compact explanation of a laminar solver as well as a turbulent solver and the difference between them. The focus is on:
 +
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* icoFoam
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* pisoFoam
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* the PISO algorithm
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* write statements
 +
* inclusion of turbulence modeling
  
 
=[https://wiki.openfoam.com/Stationary_turbulence_modeling_%28RAS%29_by_Jozsef_Nagy Stationary turbulence modeling (RAS)]=
 
=[https://wiki.openfoam.com/Stationary_turbulence_modeling_%28RAS%29_by_Jozsef_Nagy Stationary turbulence modeling (RAS)]=
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This tutorial gives you a step by step guideline for the steady-state simulation of a simple 2D case. Here you will learn the basics of RAS turbulence modeling and the steps needed to include a given model into your simulation. Here you will learn about:
 +
 +
* steady-state turbulence modeling
 +
* Reynolds-Averaged Navier-Stokes equations
 +
* RAS models
 +
* case setup
 +
* boundary and initial conditions
 +
* postprocessing
  
 
=[https://wiki.openfoam.com/Transient_turbulence_modeling_by_Jozsef_Nagy Transient turbulence modeling (RAS,LES)]=
 
=[https://wiki.openfoam.com/Transient_turbulence_modeling_by_Jozsef_Nagy Transient turbulence modeling (RAS,LES)]=
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This tutorial continues to guide you through the simple 2D case. This time you will consider the case to be transient. Also you will try out both URANS and LES models for the simulation. With this information you will be able to correctly choose the model for your own simulation. The topic here are:
 +
 +
* transient turbulence modeling
 +
* URANS models
 +
* Large Eddy Simulations
 +
* case setup
 +
* boundary and initial conditions
 +
* postprocessing
  
 
=[https://wiki.openfoam.com/PitzDaily_tutorial_by_Sergei_Strijhak Rearward facing step]=
 
=[https://wiki.openfoam.com/PitzDaily_tutorial_by_Sergei_Strijhak Rearward facing step]=
  
 
=[https://wiki.openfoam.com/The_DrivAer_case_by_Gavin_Tabor The DrivAer case]=
 
=[https://wiki.openfoam.com/The_DrivAer_case_by_Gavin_Tabor The DrivAer case]=

Revision as of 10:16, 20 September 2016

Welcome back to Day 7. Today we will make another big step in the direction of real life problems by learning about turbulence modeling. Most of the fluid dynamic problems are turbulent and it is of utmost importance how to model it and how to include the models into you simulation setup. Today we will cover

  • steady-state turbulence modeling
  • transient turbulence modeling
  • Reynolds-Averaged Navier-Stokes equations
  • Large Eddy Simulations
  • boundary conditions

Go back to "3 weeks" series.

icoFoam and pisoFoam by Håkan Nilsson

To kick the day off, this tutorial gives a compact explanation of a laminar solver as well as a turbulent solver and the difference between them. The focus is on:

  • icoFoam
  • pisoFoam
  • the PISO algorithm
  • write statements
  • inclusion of turbulence modeling

Stationary turbulence modeling (RAS)

This tutorial gives you a step by step guideline for the steady-state simulation of a simple 2D case. Here you will learn the basics of RAS turbulence modeling and the steps needed to include a given model into your simulation. Here you will learn about:

  • steady-state turbulence modeling
  • Reynolds-Averaged Navier-Stokes equations
  • RAS models
  • case setup
  • boundary and initial conditions
  • postprocessing

Transient turbulence modeling (RAS,LES)

This tutorial continues to guide you through the simple 2D case. This time you will consider the case to be transient. Also you will try out both URANS and LES models for the simulation. With this information you will be able to correctly choose the model for your own simulation. The topic here are:

  • transient turbulence modeling
  • URANS models
  • Large Eddy Simulations
  • case setup
  • boundary and initial conditions
  • postprocessing

Rearward facing step

The DrivAer case