[a17]

I'm simulating interphase mass transfer from gas to liquid phase using vof model. My udf code:
#include "udf.h"

DEFINE_MASS_TRANSFER(liq_gas_source, cell, thread, from_index, from_species_index, to_index, to_species_index)
{
real m_lg;
real T_SAT = 373.15;
Thread *gas = THREAD_SUB_THREAD(thread, from_index);
Thread *liq = THREAD_SUB_THREAD(thread, to_index);

m_lg = 0.;
if (C_T(cell, liq) >= T_SAT)
{
m_lg = -0.1*C_VOF(cell,liq)*C_R(cell,liq)*
fabs(C_T(cell,liq)-T_SAT)/T_SAT;
}
if ((m_lg == 0. ) && (C_T(cell, gas) <= T_SAT))
{
m_lg = 0.1*C_VOF(cell,gas)*C_R(cell,gas)*
fabs(T_SAT-C_T(cell,gas))/T_SAT;
}

return (m_lg);
}


while building this file, console is showing this:



(system "copy "C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\sr c\udf\sconstruct.udf "libudf4\win64\3ddp_node\SConstruct" ")

1 file(s) copied.
(system "copy "C:\PROGRA~1\ANSYSI~1\v211\fluent"\fluent21.1.0\sr c\udf\scons_test.bat "libudf4\win64\3ddp_node\scons_test.bat" ")
1 file(s) copied.
(chdir "libudf4")(chdir "win64\3ddp_node")
C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>rem


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>rem Copyright 1987-2021 ANSYS, Inc. All Rights Reserved.


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>rem


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>set PYTHONHOME=C:\PROGRA~1\ANSYSI~1\v211\fluent/../commonfiles/CPython/3_7/winx64/Release/python


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>set PYTHONPATH=C:\PROGRA~1\ANSYSI~1\v211\fluent/../commonfiles/CPython/3_7/winx64/Release/python


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>set FLUENT_UDF_COMPILER=clang


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>set FLUENT_UDF_CLANG=builtin


C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node>"C:\PROGRA~1\A NSYSI~1\v211\fluent/../commonfiles/CPython/3_7/winx64/Release/python/scons"
scons: Reading SConscript files ...
Compiler used is "C:\PROGRA~1\ANSYSI~1\v211\fluent"\ntbin\clang\bin \clang-cl
Linker used is "C:\PROGRA~1\ANSYSI~1\v211\fluent"\ntbin\clang\bin \lld-link
Copy("C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node\resolve.exe", "C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\win64\reso lve.exe")
c_sources ['udf_names.c']
c_sources_ []
scons: done reading SConscript files.
scons: Building targets ...
"C:\PROGRA~1\ANSYSI~1\v211\fluent"\ntbin\clang\bin \clang-cl /c /DUDF_EXPORTING /DUDF_NT /DWIN64 /EHa /wd4224 -Wno-return-type -Wno-implicit-function-declaration -Wno-comment -Wno-incompatible-library-redeclaration -Wno-reserved-user-defined-literal /clang:-std=c99 -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\win6 4\3ddp_node -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ main -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ addon-wrapper -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ io -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ species -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ pbns -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ numerics -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ sphysics -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ storage -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ mphase -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ bc -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ models -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ material -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ amg -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ util -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ mesh -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ udf -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ ht -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ dx -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ turbulence -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ acoustics -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ parallel -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ etc -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ ue -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ dpm -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ dbns -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\cort ex\src -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\clie nt\src -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\tgri d\src -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\PRIM E\tgrid\src -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\mult iport\src -I C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\mult iport\mpi_wrapper\src -I C:\PROGRA~1\ANSYSI~1\v211\fluent\include -I "C:\Users\lenovo\Desktop\Ansys Files\Helical coil and straight pipe_files\user_files\straight pipe\short pipe\vofudf\libudf4\win64\3ddp_node" -I C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\clang\MSVC\ 14.10.25017\include -I C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\clang\x64\l ib\clang\10.0.0\include -I C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\clang\10\In clude\10.0.18362.0\shared -I C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\clang\10\In clude\10.0.18362.0\ucrt -I C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\clang\10\In clude\10.0.18362.0\um udf_names.c
In file included from udf_names.c:3:
In file included from C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ udf\udf.h:22:
In file included from C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ main\global.h:249:
In file included from C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ storage\var.h:10:
C:\PROGRA~1\ANSYSI~1\v211\fluent\ntbin\clang\10\In clude\10.0.18362.0\shared\basetsd.h(322,12): warning: cast to 'void * __ptr32' from smaller integer type 'unsigned long' [-Wint-to-void-pointer-cast]
return((void * POINTER_32) (unsigned long) (ULONG_PTR) p);
^
In file included from udf_names.c:3:
C:\PROGRA~1\ANSYSI~1\v211\fluent\fluent21.1.0\src\ udf\udf.h(79,12): fatal error: 'ud_io1.h' file not found
# include "ud_io1.h"
^~~~~~~~~~
1 warning and 1 error generated.
scons: *** [udf_names.obj] Error 1
scons: building terminated because of errors.




How can solve this problem? Please help its urgent