mass diffusivity

May 26, 2008, 11:46

Hi all I am using binary diffusion model , I use DEFINE_DIFFUSIVITY to enter mass diffusivity, but I recieve this error: DOMAIN_MULTICOMP_DIFF: undeclared variable my udf is :

#include "udf.h" DEFINE_DIFFUSIVITY(uds_diff,c,t,i) { real d; C_DIFF_L(c,t,0,1)= 12345; d = C_DIFF_L(c,t,0,1); return d; }

How I must use C_DIFF_L(c,t,i,j)in udf?

thanks

May 29, 2008, 07:15

Hi all I am using binary diffusion model , I use DEFINE_DIFFUSIVITY to enter mass diffusivity, but I recieve this error: DOMAIN_MULTICOMP_DIFF: undeclared variable. my udf is :

#include "udf.h" DEFINE_DIFFUSIVITY(uds_diff,c,t,i) { real d; C_DIFF_L(c,t,0,1)= 12345; d = C_DIFF_L(c,t,0,1); return d; }

How I must use C_DIFF_L(c,t,i,j)in udf?

thanks

May 26, 2008, 11:46	mass diffusivity	#1
pour Guest Posts: n/a	Hi all I am using binary diffusion model , I use DEFINE_DIFFUSIVITY to enter mass diffusivity, but I recieve this error: DOMAIN_MULTICOMP_DIFF: undeclared variable my udf is : #include "udf.h" DEFINE_DIFFUSIVITY(uds_diff,c,t,i) { real d; C_DIFF_L(c,t,0,1)= 12345; d = C_DIFF_L(c,t,0,1); return d; } How I must use C_DIFF_L(c,t,i,j)in udf? thanks

May 29, 2008, 07:15	Re: mass diffusivity	#2
pour Guest Posts: n/a	Hi all I am using binary diffusion model , I use DEFINE_DIFFUSIVITY to enter mass diffusivity, but I recieve this error: DOMAIN_MULTICOMP_DIFF: undeclared variable. my udf is : #include "udf.h" DEFINE_DIFFUSIVITY(uds_diff,c,t,i) { real d; C_DIFF_L(c,t,0,1)= 12345; d = C_DIFF_L(c,t,0,1); return d; } How I must use C_DIFF_L(c,t,i,j)in udf? thanks

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