pimpleDyMFoam vs transientSimpleDyMFoam

Kaskade · January 11, 2012, 10:59

Hi,

I am currently in the process of simulating a radial pump using GGIs. Can someone please tell me the advantages of one solver over the other. They seem to be the only two available/relevant to my case.
So far I have noticed that pimpleDyMFoam runs 5 times as fast as transientSimpleDyMFoam, while the residuals for p remain higher.

Greetings,
Kaskade

be_inspired · March 23, 2015, 09:31

Any news?
I am trying to find the best solver that allow me to increase CFL at the limit I need.

Kaskade · March 23, 2015, 15:18

Honestly: Back when I wrote that, I had barely started using CFD. Right now I am using Fluent and haven't touched OF for more than a year.

The choice between the two solvers is down to which OF you are using. Vanilla or extend. Personally I prefer PISO to SIMPLE. I think if you set the Outer Iterations in PIMPLE to 1, you end up with PISO.

January 11, 2012, 10:59	pimpleDyMFoam vs transientSimpleDyMFoam	#1
Kaskade Senior Member Onno Join Date: Jan 2012 Location: Germany Posts: 120 Rep Power: 15	Hi, I am currently in the process of simulating a radial pump using GGIs. Can someone please tell me the advantages of one solver over the other. They seem to be the only two available/relevant to my case. So far I have noticed that pimpleDyMFoam runs 5 times as fast as transientSimpleDyMFoam, while the residuals for p remain higher. Greetings, Kaskade

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March 23, 2015, 09:31		#2
be_inspired Senior Member M. Montero Join Date: Mar 2009 Location: Madrid Posts: 153 Rep Power: 17	Any news? I am trying to find the best solver that allow me to increase CFL at the limit I need.

March 23, 2015, 15:18		#3
Kaskade Senior Member Onno Join Date: Jan 2012 Location: Germany Posts: 120 Rep Power: 15	Honestly: Back when I wrote that, I had barely started using CFD. Right now I am using Fluent and haven't touched OF for more than a year. The choice between the two solvers is down to which OF you are using. Vanilla or extend. Personally I prefer PISO to SIMPLE. I think if you set the Outer Iterations in PIMPLE to 1, you end up with PISO.