[chem engineer]

hi everyone
I face the following error while interpreting the udf that is written as follows:

cpp -I"C:\Fluent.Inc\fluent6.3.26/src" -I"C:\Fluent.Inc\fluent6.3.26/cortex/src" -I"C:\Fluent.Inc\fluent6.3.26/client/src" -I"C:\Fluent.Inc\fluent6.3.26/multiport/src" -I. -DUDFCONFIG_H="<udfconfig.h>" "H:\CO2.c"
Error: H:\CO2.c: line 29: parse error.
Error: H:\CO2.c: line 109: parse error.

the udf is:

/* udf for mass transfer of CO2 in DEA solution */
#include "udf.h"
#undef C_TYPE
#define C_TYPE(c,t) ((int) C_STORAGE(c,t,SV_TYPE,uchar_fl *))
DEFINE_MASS_TRANSFER(CO2_DEA,c,t,from_phase_index, from_species_index,to_phase_index,to_species_index )
{
real m_lg=0;
real xy=0,dxx1=0.000015,dxy1=0.00015,xc0[ND_ND],xc1[ND_ND],k=0,hy=0,ly=0,my=0,ny=0,py=0,ay=0,mc=44.01,mh=34. 08,mch=16.04,mw=18.02,ma=105.14,ml=148.14,mm=1.01, mn=106.15,mp=33.07,area=0,x=0,cg=0,cl=0,hcw=2916.3 2,hnw=3994.42,hnm=5095.5,hna=0,u,kg,kl,yy=0,hsy=0, y,xi=0;
cell_t c0,c1;
Thread *t0,*t1;
int ii=0;
int jj=1;
Thread *gas=THREAD_SUB_THREAD(t,ii);
Thread *liq=THREAD_SUB_THREAD(t,jj);
real xc[ND_ND];
real xf[ND_ND];
C_CENTROID(xc,c,t);
if(C_VOF(c,liq)>0.1 && C_VOF(c,liq)<0.9)
{
face_t f;
Thread *tf;
int n;
c_face_loop(c,t,n)
/*loops over all faces of a cell*/
{
f=C_FACE(c,t,n);
tf=C_FACE_THREAD(c,t,n);
F_CENTROID(xf,f,tf);
if(BOUNDARY_FACE_THREAD_P(tf)) /*return TRUE if Thread *tf is a boundary face thread.*/
{
if(xc[1]>xf[1] && fabs(xc[1]-xf[1])>1e-8)
{
xy=F_YI(f,liq,0);
hy=F_YI(f,liq,1);
ly=F_YI(f,liq,2);
my=F_YI(f,liq,3);
ny=F_YI(f,liq,4);
py=F_YI(f,liq,5);
ay=F_YI(f,liq,6);
dxy1=xf[1]-xc[1];
}
if(xc[1]<xf[1] && fabs(xc[1]-xf[1])>1e-8);
{
yy=F_YI(f,gas,0);
hsy=F_YI(f,gas,1);
}
if(xf[0]<xc[0] && fabs(xc[0]-xf[0])>1e-8)
{
dxx1=xf[0]-xc[0];
}
}
else /* if thread is not a boundary face thread */
{
face_t f;
Thread *tf;
int n;
f=C_FACE(c,t,n);
tf=C_FACE_THREAD(c,t,n);
F_CENTROID(xf,f,tf);
c0=F_C0(f,tf);
c1=F_C1(f,tf);
t0=THREAD_T0(tf);
t1=THREAD_T1(tf);
C_CENTROID(xc0,c0,t0);
C_CENTROID(xc1,c1,t1);
if(xc0[0]<xc[0] && fabs(xc[0]-xf[0])>1e-8)
{
dxx1=xf[0]-xc[0];
}
if(xc0[1]>xc[1] && fabs(xc[1]-xf[1])>1e-8)
{
yy=C_YI(c0,gas,0);
hsy=C_YI(c0,gas,1);
}
if(xc0[1]<xc[1] && fabs(xc[1]-xf[1])>1e-8)
{
xy=C_YI(c0,liq,0);
hy=C_YI(c0,liq,1);
ly=C_YI(c0,liq,2);
my=C_YI(c0,liq,3);
ny=C_YI(c0,liq,4);
py=C_YI(c0,liq,5);
ay=C_YI(c0,liq,6);
dxy1=xf[1]-xc[1];
}
if(xc1[0]<xc[0] && fabs(xc[0]-xf[0])>1e-8)
{
dxx1=xf[0]-xc[0];
}
if(xc1[1]>xc[1] && fabs(xc[1]-xf[1])>1e-8)
{
yy=C_YI(c1,gas,0);
hsy=C_YI(c1,gas,1);
}
if(xc1[1]<xc[1] && fabs(xc[1]-xf[1])>1e-8)
{
xy=C_YI(c1,liq,0);
hy=C_YI(c1,liq,1);
ly=C_YI(c1,liq,2);
my=C_YI(c1,liq,3);
ny=C_YI(c1,liq,4);
py=C_YI(c1,liq,5);
ay=C_YI(c1,liq,6);
dxy1=xf[1]-xc[1];
}a
}
}
/* x & y & delta x & delta y are defined */
k=hnm*hcw*C_R(c,liq)*(C_YI(c,liq,0)/mc+C_YI(c,liq,1)/mh+C_YI(c,liq,2)/ml+C_YI(c,liq,3)/mm+C_YI(c,liq,4)/mn+C_YI(c,liq,5)/mp+C_YI(c,liq,6)/ma+C_YI(c,liq,7)/mw)/(hnw*(101325+C_P(c,gas))/1000);
/* k=equilibrium constant & k=y/x */
area=fabs(NV_MAG(C_VOF_RG(c,liq)));
x=xy/(xy+ay*mc/ma+hy*mc/mh+ly*mc/ml+my*mc/mm+ny*mc/mn+py*mc/mp+(1-xy-ay-hy-ly-my-ny-py)*mc/mw);
y=yy/(yy+hsy*mc/mh+(1-yy-hsy)*mc/mch);
cl=C_R(c,liq)*(C_YI(c,liq,0)/mc+C_YI(c,liq,1)/mh+C_YI(c,liq,2)/ml+C_YI(c,liq,3)/mm+C_YI(c,liq,4)/mn+C_YI(c,liq,5)/mp+C_YI(c,liq,6)/ma+C_YI(c,liq,7)/mw);
cg=C_R(c,gas)*(C_YI(c,gas,0)/mc+C_YI(c,gas,1)/mh+C_YI(c,gas,2)/mch);
u=fabs(C_U(c,t));
kg=2*sqrt(1.410191e-5*u/(3.1416*2*fabs(dxx1)));
kl=2*sqrt(1.3741e-9*u/(3.1416*2*fabs(dxx1)));
xi=(kl*cl*x+kg*cg*y)/(kl*cl*+k*kg*cg)
m_lg=kl*mc*cl*area*(xi-x);
}
}
if(m_lg<20 && m_lg>0)
{return m_lg;}
else
{return 0;}
{

line 29 and 109 are bold with red color
could anyone help me with this error?

[Bruno Machado]

did you try to compile this udf? maybe this error happens because you are trying to interpreted it.

[chem engineer]

while compiling I face this error:



> Deleted old libudf\ntx86\3ddp\libudf.dll
The system cannot find the file specified.
(system "copy C:\Fluent.Inc\fluent6.3.26\src\makefile_nt.udf libudf\ntx86\3ddp\makefile")
1 file(s) copied.
(chdir "libudf")()
(chdir "ntx86\3ddp")()

Done.
"C:/Fluent.Inc/ntbin/ntx86"

Opening library "libudf"...
Error: open_udf_library: The system cannot find the file specified.

Error Object: ()

[Bruno Machado]

Originally Posted by chem engineer

while compiling I face this error:



> Deleted old libudf\ntx86\3ddp\libudf.dll
The system cannot find the file specified.
(system "copy C:\Fluent.Inc\fluent6.3.26\src\makefile_nt.udf libudf\ntx86\3ddp\makefile")
1 file(s) copied.
(chdir "libudf")()
(chdir "ntx86\3ddp")()

Done.
"C:/Fluent.Inc/ntbin/ntx86"

Opening library "libudf"...
Error: open_udf_library: The system cannot find the file specified.

Error Object: ()

I dont think this error is related with the UDF. It is probably related with your compiler. Try to make a simple udf and see if it compiles. If it doesnt, have a look in other topics how to fix compiler issues.

[chem engineer]

Originally Posted by Bruno Machado

I dont think this error is related with the UDF. It is probably related with your compiler. Try to make a simple udf and see if it compiles. If it doesnt, have a look in other topics how to fix compiler issues.

I tried some other udfs. they are compiled and there is no problem. I use microsoft visual studio to compile udf.I don't know what the problem is.

[gzamiri@gmail.com]

I have problem in compiling UDF in ANSYS FLUENT.

I have installed Visual studio:Microsoft Visual Studio 2013

My ansys fluent is fluent 12.1.2.
I write my code in Microsoft Visual Studio and i don't compile code in Microsoft Visual Studio then i load this code in fluent as follows:
define/user-defined/compiled

The error it is showing while loading is :
'nmake' is not recognized as an internal or external command,operable program or batch file.

Please anyone help me how to get out of this problem.I am using 64-bit system with Windows 8.

[chem engineer]

Originally Posted by gzamiri@gmail.com

I have problem in compiling UDF in ANSYS FLUENT.

I have installed Visual studio:Microsoft Visual Studio 2013

My ansys fluent is fluent 12.1.2.
I write my code in Microsoft Visual Studio and i don't compile code in Microsoft Visual Studio then i load this code in fluent as follows:
define/user-defined/compiled

The error it is showing while loading is :
'nmake' is not recognized as an internal or external command,operable program or batch file.

Please anyone help me how to get out of this problem.I am using 64-bit system with Windows 8.

you should'n open fluent directly. you should open it from visual studio in this way:
first open microsoft visual studio. then click on ''tools'' tab and click ''visual studio command prompt'' under this tab. you should write the directory of fluent.exe (using the function cd, as it is used in cmd) then you should type fluent in the command prompt.this way fluent will be open via visual studio and you can compile your udf there.
if you had any problem in this procedure or if something is not clear to you, you can ask

[gzamiri@gmail.com]

dear chem
Thank you very much for suggestion. I try your suggestion. I compile my code in visual studio then I try build compiled code in fluent as follows
define-user_defined-functions-compiled

unfortunetly I observed previous error in fluent

Please suggest me if there is any mistakes.

Thank you,

[chem engineer]

how do you compile your cod in visual studio?where do you write your code?

[chem engineer]

you should write your code in a notepad then change its format to a .c file.then do the process i explained to open fluent via visual studio.at the end in that fluent compile your udf by the directory: define-userdefined-functions- compile.and add your udf by .c format in source files part.then click build to build your library then click load and your udf is ready to use.

[gzamiri@gmail.com]

dear chem
Thank you very much , your advice solved my problem!