FLUENT Supersonic Combustion

July 13, 2007, 10:56

Hello, I am modelling Supersonic Combstion with Fluent.

I started with a 2d case Coupled Implicit solver, and every thing was pretty fine. The CFL number had to remain under 1 though ( slow convergence, anyway).

Now I try to do the same with a 3d calculation,it is VERY Slow. I am currently computing a mixing case. What should I do. Is it a problem linked to Couple or Implicit solver?

July 17, 2007, 01:38

yes it is!try changing the courant number(incresing) for every set of time steps after the solution got stabilised.

July 13, 2007, 10:56	FLUENT Supersonic Combustion	#1
Alexandre Neophytou Guest Posts: n/a	Hello, I am modelling Supersonic Combstion with Fluent. I started with a 2d case Coupled Implicit solver, and every thing was pretty fine. The CFL number had to remain under 1 though ( slow convergence, anyway). Now I try to do the same with a 3d calculation,it is VERY Slow. I am currently computing a mixing case. What should I do. Is it a problem linked to Couple or Implicit solver?

July 17, 2007, 01:38	Re: FLUENT Supersonic Combustion	#2
gopal Guest Posts: n/a	yes it is!try changing the courant number(incresing) for every set of time steps after the solution got stabilised.

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