Difference between revisions of "Day 5"

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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/Introduction_by_Ferras,_Fernandes_and_Nobrega Introduction to OpenFOAM]=
 
 
This tutorial is an excellent introduction as well as summary of OpenFOAM in general and will summarize all the information you gained. Also you will try and compile a custom code in order to understand the numerics with a simple 1D case. The focus is on:
 
 
* general introduction
 
* solvers
 
* versions
 
* code structure
 
* case structure
 
* summery of numerical entries
 
* simple 1D problem
 
  
 
=[https://wiki.openfoam.com/Running_your_first_case_by_Jozsef_Nagy Running your first case on your own]=
 
=[https://wiki.openfoam.com/Running_your_first_case_by_Jozsef_Nagy Running your first case on your own]=
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* running your simulation
 
* running your simulation
 
* postprocessing your simulation
 
* postprocessing your simulation
 
=[https://wiki.openfoam.com/First_Case_by_Bahram_Haddadi Discretization – Part 2]=
 
 
Use the scalarTransportFoam solver, do simulate the movement of a circular scalar spot region at the middle of a 100 × 100 cell mesh (10 m × 10 m), then move it to the right, to the top and diagonally.
 
 
* Choosing the best discretization scheme.
 
  
 
=[https://wiki.openfoam.com/Hagen_Poiseuille_by_Joel_Guerrero Hagen Poiseuille flow]=
 
=[https://wiki.openfoam.com/Hagen_Poiseuille_by_Joel_Guerrero Hagen Poiseuille flow]=
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* numerics
 
* numerics
 
* sampling during postprocessing
 
* sampling during postprocessing
 
=[https://wiki.openfoam.com/Basic_introduction_by_Hakan_Nilsson Basic introduction to OpenFOAM]=
 
 
Here you will an excellent introduction to OpenFOAM by Håkan Nilsson from Chalmers University of Technology.
 
  
 
=[https://wiki.openfoam.com/Basic_introduction_by_Hakan_Nilsson Course of Håkan Nilsson]=
 
=[https://wiki.openfoam.com/Basic_introduction_by_Hakan_Nilsson Course of Håkan Nilsson]=

Revision as of 22:22, 3 October 2018

Welcome to Day 5. After some dry topics, today we have some fun simulations for you. You will also get a links to materials, which can help improve the quality of your simulation. If you have some problems in the future with your simulations, you can come back to them. Most probably you will find a solution.

Go back to "3 weeks" series.

Running your first case on your own

Try your gained knowledge about OpenFOAM and set up a case on your own. For this you will need everything you have learned so far. The pdf version can be found here. You will cover

  • creating your mesh
  • setting up initial and boundary conditions
  • setting up physical properties
  • setting correct numerical settings
  • running your simulation
  • postprocessing your simulation

Hagen Poiseuille flow

Another fun simulation is the laminar Hagen Poiseuille flow. Follow the set-by-step introductions to utilize and further extend your gained knowledge about

  • a simple case setup
  • function objects
  • laminar flow
  • numerics
  • sampling during postprocessing

Course of Håkan Nilsson

Here you will the link to the course page by Håkan Nilsson from Chalmers University of Technology with ~125! tutorial cases.

Tips and Tricks for OpenFOAM simulations

Below you will find additional material, where you can find tips and tricks for the improvement of your simulation. Feel free to go though them and fall back to them in the future, once you encounter some problems in your simulation.

Tips 1

In this handy summary of OpenFOAM functionalities you can read about e.g.

  • geometry and mesh creation
  • case setup
  • case control
  • field initialization
  • boundary conditions
  • turbulence modeling
  • multiphase modeling (Eulerian and Lagrangian)
  • solvers
  • postprocessing
  • programming in OpenFOAM

Tips 2

In this material you can find information on the small details, which do make the difference between a good simulation and crashing.

  • shell environment
  • looking for information in the source code
  • running cases on a cluster
  • mesh quality check
  • boundary and initial conditions
  • numerics
  • convergence
  • function objects

End of Day 5

We are happy, that you finished Day 5. We hope, that you enjoyed your journey with OpenFOAM so far. By now you should have a good understanding about the basics and the theory. On Day 6 we will continue with a more advanced topic:

  • meshing.

See you on Day 6.