SIMPLE family and Fractional Step Method

Geon-Hong · April 5, 2010, 04:34

Dear friends.

I have tried to implement IBM to the incompressible NS solver which is written by M.Peric. The NS solver uses SIMPLE algorithm.

But when I read articles which is related to IBM, almost of them use fractional step method instead of SIMPLE family algorithms.

What are differences between them? What are strong and week points of them?

Thank you very much.

Sincerely,
Geon-Hong

Geon-Hong · April 5, 2010, 04:36

In addition, my main interest is unsteady flow problems.

arjun · April 5, 2010, 19:05

you can apply it to simple method too.
All you need is to give correct forcing terms to momentum equations. fluent has a ibm manual also on their site. If you get a chance have a look, they have explained how they do it.

April 5, 2010, 04:34	SIMPLE family and Fractional Step Method	#1
Geon-Hong Member Geon-Hong Kim Join Date: Feb 2010 Location: Ulsan, Republic of Korea Posts: 36 Rep Power: 16	Dear friends. I have tried to implement IBM to the incompressible NS solver which is written by M.Peric. The NS solver uses SIMPLE algorithm. But when I read articles which is related to IBM, almost of them use fractional step method instead of SIMPLE family algorithms. What are differences between them? What are strong and week points of them? Thank you very much. Sincerely, Geon-Hong

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April 5, 2010, 04:36		#2
Geon-Hong Member Geon-Hong Kim Join Date: Feb 2010 Location: Ulsan, Republic of Korea Posts: 36 Rep Power: 16	In addition, my main interest is unsteady flow problems.

April 5, 2010, 19:05		#3
arjun Senior Member Arjun Join Date: Mar 2009 Location: Nurenberg, Germany Posts: 1,291 Rep Power: 35	you can apply it to simple method too. All you need is to give correct forcing terms to momentum equations. fluent has a ibm manual also on their site. If you get a chance have a look, they have explained how they do it.