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March 5, 2012, 05:17 
Add a custom body force to the momentum equation, f=f(x,y,z)

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Jeong Kim
Join Date: Feb 2010
Posts: 42
Rep Power: 9 
I wanted to add a force to the alphaphase moment equation.
This is a funciton of x, y and z location, which force is not dependent on time. For an exmaple, customF = customF(x,y,z) where i,j and k are indexing counters. Below is the folmula expression that I'd like to use. if(x(i)>x0 or x(i)<xl ) customF(i) = a*x(i1)*y(j)*z(k) + a*x(i)*y(j)*z(k) + a*x(i+1)*y(j)*z(k); else customF(i) = 0; The vector customF is composed of three components (x,y,z). How can I write this force in the OF? 

March 5, 2012, 15:44 

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Bernhard Gschaider
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Quote:
http://www.cfdonline.com/Forums/ope...tml#post329700 

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