[Spartacus1]

Hello everyone I am new in this forum and I hope you can help me with my problem.
I'm trying to crare a motion of sloshing, with Fluent, in a rectangular tank through dynamic mesh.
I have a problem of compilation of the UDF, in particular the library is not created and load by fluent showing the following error:

Deleted old libudf \ ntx86 \ 2ddp \ libudf.dll
******** 1 file copied.
(system "copy C: \ Fluent.Inc \ fluent6.3.26 \ src \ makefile_nt.udf libudf \ ntx86 \ 2ddp \ makefile")
******** 1 file copied.
(chdir "libudf") ()
(chdir "ntx86 \ 2ddp") ()
velocitax.c
# Udf_names.c Because Of Generating makefile velocitax.obj

Done.
"c :/ users / manna / desktop / exercises with vx"

Opening library "libudf" ...
Error: open_udf_library: Could not find the file specified.

Error Object: ()

can someone help me??
thanks

[Spartacus1]

I need a solution.
My project can not move forward if you do not solve the problem
can someone help me?

[pakk]

It could be because you have spaces in your folder name.

"c :/ users / manna / desktop / exercises with vx"

Try changing them to underscores (exercises_with_vx), it might help.

[Spartacus1]

Originally Posted by pakk

It could be because you have spaces in your folder name.

"c :/ users / manna / desktop / exercises with vx"

Try changing them to underscores (exercises_with_vx), it might help.

hello Pakk
I tried to change the name of the folder, but I have not solved.
the problem that appears in the log file is as follows:

Microsoft (R) 32-bit C / C + + Optimizing Compiler version 16.00.30319.01 for 80x86
Copyright (C) Microsoft Corporation. All rights reserved.

"sed" Š not recognized as an internal or external command,
* operable program or batch file.
NMAKE: U1077: 'sed': return code '0 x1 '
Stop.

can you help me?
If you really want I can send you the code c that I have written

[pakk]

I don't think your udf is giving the problems, that would give different kinds of error messages. You are probably not able to compile any udf at all (am I right?)

It may have to do with your systems settings, or with the way you are trying to compile them. Are you starting Fluent from the SDK command prompt? I am no expert on these things: it works on my computer, but I didn't install it.

[Spartacus1]

Originally Posted by pakk

I don't think your udf is giving the problems, that would give different kinds of error messages. You are probably not able to compile any udf at all (am I right?)

It may have to do with your systems settings, or with the way you are trying to compile them. Are you starting Fluent from the SDK command prompt? I am no expert on these things: it works on my computer, but I didn't install it.

Dear Pakk
I created a folder on the desktop where I put mesh files and code c. than
i start fluent 6.3.26 from the command prompt Visual Studio 2010 and I adopt the compilation process of the interface Fluent:
*


Define> user defined> function> compiled> add surce> build library> load

this is my procedure ..

Something wrong in your opinion?
if it is something that concerns the settings of the system you can tell me what i have to make
thanks for your answers

[shuai_manlou]

http://www.cfd-online.com/Forums/fluent/29327-udf.html

[Spartacus1]

thanks I solved the problem of compilation ,
it concerned the setting of environmental variables , I can now load the librer .
I still remain two problems :
1 . fluent shows some worning :


c: \ fluent.inc \ fluent6.3.26 \ src \ machine.h (114) : warning C4005 : ' stdout ' : macro redefinition
********C: \ Program Files \ Microsoft Visual Studio 10.0 \ VC \ INCLUDE \ stdio.h (158) : see previous definition of ' stdout '
c: \ fluent.inc \ fluent6.3.26 \ src \ machine.h (115) : warning C4005 : ' stderr ' : macro redefinition
********C: \ Program Files \ Microsoft Visual Studio 10.0 \ VC \ INCLUDE \ stdio.h (159) : see previous definition of ' stderr '
c: \ fluent.inc \ fluent6.3.26 \ src \ machine.h (116) : warning C4005 : ' stdin ' : macro redefinition
********C: \ Program Files \ Microsoft Visual Studio 10.0 \ VC \ INCLUDE \ stdio.h (157) : see previous definition of ' stdin '
# Linking libudf.dll Because Of makefile user_nt.udf udf_names.obj velocitax.obj
Microsoft (R) Incremental Linker Version 10.00.30319.01
Copyright (C ) Microsoft Corporation. All rights reserved.

***Creating the library and object libudf.lib libudf.exp in progress ...

Done .
"c :/ users / manna / desktop / exercises "

Opening library " libudf " ...
Library " libudf \ ntx86 \ 2ddp \ libudf.dll " opened
velocitax
Done .

I can neglect them ? ?

2 . I have to simulate a motion of sloshing in a rectangular tank in particular I have to give the fluid a rate of oscillation of the type :

vx = A * f * sin ( f * t)

I have created a UDF ufilizzando the following function:

DEFINE_CG_MOTION

so as to assign the speed vx to the center of gravity.
then hooking this function by activating dynamic mesh and applying in zone> rigid body> udf motion.
my question is the following:
is it right to use dynamic mesh to create an oscillatory motion of the fluid?
there are other methods to assign the vx fluid?

[shuai_manlou]

Maybe you can type your code here, maybe i can give you some help.