OpenFoam 3D cases

cute · May 29, 2016, 18:06

Thanks alexeym

. Yes, I used iso-surface to get my interfaces, but I did not use threshold filter, I will try later.

This was the base case study before moving to more complex problem. My next step is to implement Rosenborck-Wanner method in my case. I found a file rosenbock34.C, which is available in ODE solvers but it is for ODE. Can you suggest how to use the method using PDE? It seems to me that I need to start from scratch.

alexeym · May 31, 2016, 05:09

What do you mean by "how to use the method using PDE?"? I think before starting "from scratch" you need to formulate your problem a little bit clearer.

cute · May 31, 2016, 09:40

I am using a PDE model, we know that the system is stiff and would like to use RosenBrock method to solve numerically. See simplified version of attached PDE.

alexeym · May 31, 2016, 10:28

Guess, you would like to use mentioned method for time stepping? Well, any way it seems you have to start from scratch.

cute · May 31, 2016, 10:34

Thanks for all your help.

Fahmida · July 24, 2019, 16:59

@cute How could you manage to show the semi-spheres like that? Can you please explain in details?
By the way, thanks to both of you. It was a very helpful conversation.

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May 29, 2016, 18:06		#21
cute Member anonymous Join Date: Mar 2016 Location: Canada Posts: 93 Rep Power: 10	Thanks alexeym . Yes, I used iso-surface to get my interfaces, but I did not use threshold filter, I will try later. This was the base case study before moving to more complex problem. My next step is to implement Rosenborck-Wanner method in my case. I found a file rosenbock34.C, which is available in ODE solvers but it is for ODE. Can you suggest how to use the method using PDE? It seems to me that I need to start from scratch.

May 31, 2016, 05:09		#22
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	What do you mean by "how to use the method using PDE?"? I think before starting "from scratch" you need to formulate your problem a little bit clearer.

May 31, 2016, 10:28		#24
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Guess, you would like to use mentioned method for time stepping? Well, any way it seems you have to start from scratch.

May 31, 2016, 10:34		#25
cute Member anonymous Join Date: Mar 2016 Location: Canada Posts: 93 Rep Power: 10	Thanks for all your help.

July 24, 2019, 16:59		#26
Fahmida Member FaRa Join Date: Jul 2019 Posts: 33 Rep Power: 6	@cute How could you manage to show the semi-spheres like that? Can you please explain in details? By the way, thanks to both of you. It was a very helpful conversation.