radial distribution function

June 24, 2007, 11:09

Hi feind, I have a problem for creacting of Gidaspow radial distribution function as UDF, because this experssion does not exist in fluent 6.2.16 default. If it is possible, please guide me for Creating of this UDF. this function is identifyed as: g=3/5*[1-(solid volume fraction/max solid voule fraction)^-1]^(1/3) (fluidized bed field) thanks.

ravindra · September 7, 2012, 02:10

hey friend..
i hope u must have written the udf about radial distribution function .....i hv to write the same udf......i hv written it but it does not work .....
#include "udf.h"

DEFINE_PROPERTY(cell_radial,c,t)
{
real rad_dis;
real a_a;

a_a=1-pow(((1.-C_VOF(c,t))/0.63),(1/3));
rad_dis=(3/5)*pow(a_a,-1);

return rad_dis;
}

waiting for ur reply ....

June 24, 2007, 11:09	radial distribution function	#1
hosein Guest Posts: n/a	Hi feind, I have a problem for creacting of Gidaspow radial distribution function as UDF, because this experssion does not exist in fluent 6.2.16 default. If it is possible, please guide me for Creating of this UDF. this function is identifyed as: g=3/5*[1-(solid volume fraction/max solid voule fraction)^-1]^(1/3) (fluidized bed field) thanks.

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September 7, 2012, 02:10		#2
ravindra New Member Join Date: Jul 2012 Posts: 19 Rep Power: 13	hey friend.. i hope u must have written the udf about radial distribution function .....i hv to write the same udf......i hv written it but it does not work ..... #include "udf.h" DEFINE_PROPERTY(cell_radial,c,t) { real rad_dis; real a_a; a_a=1-pow(((1.-C_VOF(c,t))/0.63),(1/3)); rad_dis=(3/5)*pow(a_a,-1); return rad_dis; } waiting for ur reply ....