Coded BC: parabolic inlet

samiam1000 · May 16, 2014, 05:19

Dear Foamers,

I am trying to insert a coded BC in my U-BC-file.

What I wanna do is to provide a parabolic inlet to my problem.

I do something like:

Code:

inlet
{
		type codedFixedValue; 
		value uniform (0 -1 0); 
		redirectType parabolicInlet; 
		code 
		#{ 
		variables		"Vm=2;yp=pos().y;zp=pos().z+0.005;h=-max(pts().z);a=-Vm/(h*h);b=Vm;";
		fractionExpression	"1"; 
                valueExpression		"vector(a*((yp*yp)+(zp*zp))+b,0,0)";
			
		#};
}

This does not work.

Any idea about how to solve this?

Thanks a lot,
Samuele

ahmmedshakil · May 16, 2014, 05:25

Have you tried with the groovyBC ? If not then I guess it can serve your demand easily.

samiam1000 · May 16, 2014, 05:28

Actually,

the point is that - if I am not wrong - groovyBC goes along with swak4Foam and I am running a simulation on a PC where I can not compile swak4Foam, that's why I was trying to use the codedFixedValue. I think it should be able to do what I mean, isn't it?

Tushar@cfd · June 10, 2014, 01:33

Are you able to solve?

May 16, 2014, 05:19	Coded BC: parabolic inlet	#1
samiam1000 Senior Member Samuele Z Join Date: Oct 2009 Location: Mozzate - Co - Italy Posts: 520 Rep Power: 18	Dear Foamers, I am trying to insert a coded BC in my U-BC-file. What I wanna do is to provide a parabolic inlet to my problem. I do something like: Code: inlet { type codedFixedValue; value uniform (0 -1 0); redirectType parabolicInlet; code #{ variables "Vm=2;yp=pos().y;zp=pos().z+0.005;h=-max(pts().z);a=-Vm/(hh);b=Vm;"; fractionExpression "1"; valueExpression "vector(a((ypyp)+(zpzp))+b,0,0)"; #}; } This does not work. Any idea about how to solve this? Thanks a lot, Samuele

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May 16, 2014, 05:25		#2
ahmmedshakil Senior Member Mohammad Shakil Ahmmed Join Date: Oct 2012 Location: AUS Posts: 137 Rep Power: 14	Have you tried with the groovyBC ? If not then I guess it can serve your demand easily.

May 16, 2014, 05:28		#3
samiam1000 Senior Member Samuele Z Join Date: Oct 2009 Location: Mozzate - Co - Italy Posts: 520 Rep Power: 18	Actually, the point is that - if I am not wrong - groovyBC goes along with swak4Foam and I am running a simulation on a PC where I can not compile swak4Foam, that's why I was trying to use the codedFixedValue. I think it should be able to do what I mean, isn't it?

June 10, 2014, 01:33		#4
Tushar@cfd Senior Member T. Chourushi Join Date: Jul 2009 Posts: 321 Blog Entries: 1 Rep Power: 17	Are you able to solve?