Jos stam implementation with OpenFOAM

dhasthagheer · March 31, 2011, 07:43

Hi there,

I am trying to implement Jos stam's real time fluid dynamic for games using OpenFOAM. (http://www.dgp.toronto.edu/people/st.../pdf/GDC03.pdf). why i choose this paper because, I need to demonstrate advection, projection, diffusion of fluid(Navier stoke equation).

which solver do I need to use to solve navier-stoke equation(advection, projection, diffusion) in Openfoam?. Give me suggestion to simulate smoke flow as per Navier stoke equation (density solver, velocity solver).

vatavuk · April 3, 2011, 11:28

Hi,
I found Jos Stam's paper very interesting. But you must be aware that what this author does is very different from what OpenFOAM does. He is trying to do a fast simulation that looks like a real fluid flow. He doesn’t care if he is solving exactly the Navier-Stokes equation. He is mainly preoccupied to have a simple algorithm. On the other hand, OpenFOAM, if correctly used, will solve the Navier-Stokes equation with the desired degree of accuracy, giving precise results for engineering applications.

I have no experience with smoke flow in OpenFOAM but looking at the user guide (page 88), it seems that a solver for particle tracking flows would do the job.

I suggest that you think carefully if its worthwhile to use OpenFOAM for this application. Implementing a solver like the one of the paper seems to be much easier than adapting an OpenFOAM solver for a specific problem.

March 31, 2011, 07:43	Jos stam implementation with OpenFOAM	#1
dhasthagheer New Member Dhasthagheer Join Date: Feb 2011 Posts: 14 Rep Power: 15	Hi there, I am trying to implement Jos stam's real time fluid dynamic for games using OpenFOAM. (http://www.dgp.toronto.edu/people/st.../pdf/GDC03.pdf). why i choose this paper because, I need to demonstrate advection, projection, diffusion of fluid(Navier stoke equation). which solver do I need to use to solve navier-stoke equation(advection, projection, diffusion) in Openfoam?. Give me suggestion to simulate smoke flow as per Navier stoke equation (density solver, velocity solver).

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April 3, 2011, 11:28		#2
vatavuk Senior Member Paulo Vatavuk Join Date: Mar 2009 Location: Campinas, Brasil Posts: 196 Rep Power: 17	Hi, I found Jos Stam's paper very interesting. But you must be aware that what this author does is very different from what OpenFOAM does. He is trying to do a fast simulation that looks like a real fluid flow. He doesn’t care if he is solving exactly the Navier-Stokes equation. He is mainly preoccupied to have a simple algorithm. On the other hand, OpenFOAM, if correctly used, will solve the Navier-Stokes equation with the desired degree of accuracy, giving precise results for engineering applications. I have no experience with smoke flow in OpenFOAM but looking at the user guide (page 88), it seems that a solver for particle tracking flows would do the job. I suggest that you think carefully if its worthwhile to use OpenFOAM for this application. Implementing a solver like the one of the paper seems to be much easier than adapting an OpenFOAM solver for a specific problem.