Learning Forum

[wad130]

I need to set up a moving mesh for some transient simulations, but i cannot get my udf to load in. i get an error message saying "An error occurred in the previous operation. The details can be found in the next text output - Error Object: #f" what could this be caused by and how can i fix it? is there a way to make my object move without a UDF?

[Rob]

How are you loading the UDF? 

[wad130]

setup - user defined - functions - complied - add source files - load

[Rob]

Including Build? What was printed into the TUI (console) on Build?

[wad130]

i am now getting an error reading "the udf library you are trying to load (wing_motion.c) is not compiled for parallel use on the current platform (win64). the system cannot find the file specified. could this mean im saving the code written in Visual Studio incorrectly and in the wrong file type?

[wad130]

so i selected my UDI "wing_motion.c" then in library name put the same thing, then build 

[Rob]

[wad130]

sorry im not able to read what you said 

[Rob]

When you pressed Build, what happened? A failure to load often means there's an error at the compile stage. For Windows it's generally good to use the CLANG (built in) compiler too. 

[wad130]

when i click build, before clicking load i get this message - 

 "Copy "C:\Users\*****\OneDrive - University of ********\Disc drive\FYP\Transient CFD\wing_motion.c" to "wing_motion.c\src"

 

Files udf_names.c and user_nt.udf in 2ddp_host are up-to-date.

 

Copyright 1987-2024 ANSYS, Inc. All Rights Reserved.

Compiler and linker: Microsoft Visual C++

# Linking libudf.dll because of makefile user_nt.udf udf_names.obj wing_motion.obj

LINK : fatal error LNK1104: cannot open file 'kernel32.lib'

NMAKE :  U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\bin\HostX86\x64\link.EXE"' : return code '0x450'

Stop.

Files udf_names.c and user_nt.udf in 2ddp_node are up-to-date.

 

Copyright 1987-2024 ANSYS, Inc. All Rights Reserved.

Compiler and linker: Microsoft Visual C++

# Linking libudf.dll because of makefile user_nt.udf udf_names.obj wing_motion.obj

LINK : fatal error LNK1104: cannot open file 'kernel32.lib'

NMAKE :  U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Tools\MSVC\14.29.30133\bin\HostX86\x64\link.EXE"' : return code '0x450'

Stop.

 

Done."

 

 

 

[Rob]

So it's not compiling. How about when using the built in compiler? 

[wad130]

im not sure how to do that sorry.  how do i?

 

[Rob]

Click the tick box and see whether that works. You may not have a compiler installed as it's a Windows machine. 

[wad130]

thank you! when i tick that i get this error message... 

""C:\Users\****\OneDrive - University of *****\Disc drive\FYP\Transient CFD\MAYBE_files\dp0\FFF\Fluent\libudf.idl.c" is not found Copy "C:/Users/wad130/OneDrive - University of Birmingham/Disc drive/FYP/libudf.idl.c" to "libudf\src"

 

 

Copyright 1987-2024 ANSYS, Inc. All Rights Reserved.

Compiler and linker: Clang (builtin)

Compiler path: "C:\PROGRA~1\ANSYSI~1\v241\fluent"\ntbin\clang\bin\clang-cl

Linker   path: "C:\PROGRA~1\ANSYSI~1\v241\fluent"\ntbin\clang\bin\lld-link

C sources: []

In file included from udf_names.c:3:

C:\PROGRA~1\ANSYSI~1\v241\fluent\fluent24.1.0\src\udf\udf.h(81,12): fatal error: 'ud_io1.h' file not found

#  include "ud_io1.h"

          ^~~~~~~~~~

1 error generated.

scons: *** [udf_names.obj] Error 1

 

Copyright 1987-2024 ANSYS, Inc. All Rights Reserved.

Compiler and linker: Clang (builtin)

Compiler path: "C:\PROGRA~1\ANSYSI~1\v241\fluent"\ntbin\clang\bin\clang-cl

Linker   path: "C:\PROGRA~1\ANSYSI~1\v241\fluent"\ntbin\clang\bin\lld-link

C sources: []

In file included from udf_names.c:3:

C:\PROGRA~1\ANSYSI~1\v241\fluent\fluent24.1.0\src\udf\udf.h(81,12): fatal error: 'ud_io1.h' file not found

#  include "ud_io1.h"

          ^~~~~~~~~~

1 error generated.

scons: *** [udf_names.obj] Error 1

 

Done."

 

so because i somehow managed to get it working now i cant anymore

 

[Rob]

Try Fluent standalone and check the path permissions.