Error LNK 1107 When Linking UDF with Precompiled Fortran ObjectFiles
 

Hi all,

I'm working on a conjugated heat transfer problem on ANSYS FLUENT 18.2 (academic version) on a x64 Windows 10 OS. I intend to link precompiled FORTRAN object files to UDF to generate a time-dependent radiative flux boundary condition on a solid-gas interface. I got stuck with error LNK 1107. The error message is:

https://image.ibb.co/d6ymjc/error.png

In the error message, af_mc_cp.c is the source UDF file, calc_type_intr.o, calc_type_derv.o, calc_type.o, and calculation_q.o are precompiled object files.

To link the object files to the UDF, I followed the instructions in Chapter 5 Compiling UDFs in the Ansys Fluent Customization Manual (v18.2). No relevant information about this error has been given in the manual.

I tried to remove the external function in the UDF, as well as the object files, with modification made to the user_nt.udf files accordingly. The UDF works properly. I think this suggests that the error is about the linking process rather than the UDF itself. Online search of LNK 1107 also confirms it's an linking error. However, I didn't get a clue due to the lack of pertinent knowledge.

The set-ups in user_nt.udf in 3ddp_host are

https://image.ibb.co/czeOxx/host.png

and those in 3ddp_node are

https://image.ibb.co/eAgxPc/node.png

The objective files are precompiled with gfortran compiler in Ubuntu. The flags for the object files are

https://image.ibb.co/bTjqcx/gfortran.png

Much appreciation if you could point out the potential mistakes that I might have made!

Bo

Hai Bo
I am too working in conjugate heat transfer between fluid and solid region in fluent. I need to modify heat flux term in coupled boundary condition with additional source term. I am trying to use UDF to get heat flux profile. Whether using UDF it will be possible to apply heat flux to the boundary. Can u give me few suggestions.