How to get probability density function (PDF) in OpenFoam?
such like beta distribution function or battlement PDF. If not, Is there some mathematic function to calculate integration(detail: 1dimension, interval 0 to 1)?

Quote:
You need to evaluate random numbers with a certain PDF? 
Thanks!
Here it is: I need to calculate PDF such like fai(f)=(f^(v1))*((1f)^(w1))/B(v,w), where B(v,w)=Integration of x from 0 to 1: {(x^(v1))*((1x)^(w1))*dx}, v and w already known. 
and then calculate integration of f between 0 to 1: {C_dimessionless*fai(f)df}

about calculate the fluctuation of specie's concentration.
Does someone know how to call the integration function or about this? waiting online. :cool: 
up and ask?

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