[CfdMirco]

Hello,
i have a problem with a Udf for a porous media.
I have to define a time-dependant viscous resistance for a 3d volume, but when i'm going to compile the udf, fluent reports this error:
Error: The UDF library you are trying to load (libudf) is not compiled for 3d on the curent platform (win64).

The code is:

#include "udf.h"

DEFINE_PROFILE(porosity, t, i) {

real x[ND_ND];
cell_t c;
real r;
real flow_time=RP_Get_Real("flow-time");

begin_c_loop(c,t)

{

C_CENTROID(x,c,t);

r=x[1];

F_PROFILE(c,t,i)=-(0.6632*exp(-1*((flow_time+4-4.216)/0.3303)*((flow_time+4-4.216)/0.3303))+2.384*exp(-1*((flow_time

+4-3.812)/0.6343)*((flow_time+4-3.812)/0.6343))+0.02211*exp(-1*((flow_time+4-7.055)/0.3902)*((flow_time+4-

7.055)/0.3902))+1.062*exp(-1*((flow_time+4-6.428)/1.673)*((flow_time+4-6.428)/1.673))+(-4.059)*exp(-1*((flow_time+4-

440)/2032)*((flow_time+4-440)/2032))+(-0.02729)*exp(-1*((flow_time+4-8.068)/0.01501)*((flow_time+4-

8.068)/0.01501))+0.5449*exp(-1*((flow_time+4-8.327)/2.103)*((flow_time+4-8.327)/2.103))+3.839*exp(-1*((flow_time+4-

12.16)/7.86)*((flow_time+4-12.16)/7.86)))*(((3.14*(6.25*(10e-6)))/4)/(7.12*10e-5));
}

end_c_loop(c,t) }

Can anyone help me???
Thx

[stuart23]

Surely there must have been a compile error before it loaded?

Did you compile it from within Fluent?

[CfdMirco]

It builds the udf, fluent displays this messages after build:

Deleted old libudf\win64\3d\libudf.dll
1 file copied.
Copied C:\Users\Public\....\serial/C:\Users\Public\...\Udf poroso.c to libudf\src
(system "copy "C:\PROGRA~1\ANSYSI~1\v140\fluent"\fluent14.0.0\sr c\makefile_nt.udf "libudf\win64\3d\makefile" ")
1 file copied.
(chdir "libudf")()
(chdir "win64\3d")()
Done.

than when i load it it reports the error message:

Opening library "C:\Users\Public\...\serial\libudf"...
Error: The UDF library you are trying to load (libudf) is not compiled for 3d on the curent platform (win64).

Can't find the specified file.

C:\Users\Public\....\serial\libudf\win64\3d\libudf .dll
Error Object: #f

Interrupting...
Done.

Yes I compiled it within fluent.
i tried to interpret the udf and it works so it must be a problem of the compiler, but i don't understand what it's wrong because i can compiler other udfs.

[billwangard]

You probably compiled the UDF against a different version than you are actually running. For example, you may have compiled 3d double precision, but started 3d single precision, or 3d serial, and you started 3d parallel.

[CfdMirco]

But i compile the udf within the case, so it should be compiled in the same version of the case, or not?

[billwangard]

Yes. You are doing it the correct way.

I am beginning to think that you are not using the 64-bit compiler. Have you ever been able to successfully able to compile any UDF, or is this the only time you've had the problem?

[CfdMirco]

It's the first time that i have this problem, I have compiled successfully other udf