Age of air
 

Hello my dear friends.

I want to have a contour plot of air age in a room. I try many things, but I didn't got result. I tried the following UDF and user defined scalar (UDS).

#include "udf.h"

DEFINE_DIFFUSIVITY(mean_age_diff,c,t,i)
{
return C_R(c,t) * 2.88e-05 + C_MU_EFF(c,t) / 0.7;
}

But I got the following error during the iterations:

chip-exec: mean_age_diff: argument 3: incorrect type (5): pointer expectedchip-exec: mean_age_diff: argument 4: incorrect type (65802): int expectedchip-exec: mean_age_diff: argument 3:

Is there anyone here can kindly help me in the case?
Thanks.