|
[Sponsors] |
udf: volume fraction gradient in eulerian model |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
December 11, 2004, 19:36 |
Re: udf: volume fraction gradient in eulerian mode
|
#21 |
Guest
Posts: n/a
|
Thank you,
ap |
|
September 14, 2010, 15:33 |
udf for temperature jump b.c.
|
#22 |
New Member
sima
Join Date: Apr 2010
Posts: 5
Rep Power: 16 |
Hi ap,
I want to apply temperature jump boundary condition to a wall. I have written udf but when I want to iterate, the following error appears: FLUENT received fatal signal (ACCESS_VIOLATION) 1. Note exact events leading to error. 2. Save case/data under new name. 3. Exit program and restart to continue. 4. Report error to your distributor. Error Object: () In addition to THREAD_STORAGE I have written a define_init udf, in order to have an initial value for temperature gradients. Please check my udf and say what is wrong. Regards, sima #include "udf.h" #define TMAC 1.0 #define udrlxcoeff 0.02 #define mfp 6.8e-8 #define gamma 1.4 #define pr 0.7 DEFINE_INIT(my_init_func,d) { cell_t cell; Thread *c_thread; thread_loop_c(c_thread,d) { begin_c_loop_all(cell,c_thread) { C_T_G(cell,c_thread)[1]=0.00001; } end_c_loop_all(cell,c_thread) } } DEFINE_PROFILE(temperature_jump_d,f_thread,index) { face_t face; cell_t cell; Thread *c_thread,*t0; real dtemp; begin_f_loop(face,f_thread) { cell=F_C0(face,f_thread); c_thread=THREAD_T0(f_thread); if(NULL!=THREAD_STORAGE(t0,SV_T_G)) dtemp=((2-TMAC)/TMAC)*mfp*(2*gamma/((gamma+1)*pr))*(C_T_G(cell,c_thread)[1])+350.0; dtemp=(1-udrlxcoeff)*(F_T(face,f_thread))+udrlxcoeff*dtemp; F_PROFILE(face,f_thread,index) =dtemp; } end_f_loop(face,f_thread) } |
|
April 15, 2015, 06:27 |
|
#23 |
New Member
Join Date: Feb 2015
Posts: 9
Rep Power: 11 |
Hi all.
I am new to fluent. Please tell me where to how and where to patch the udf for variation in solid volume fraction in Fluent 15.0. P.S: My udf's are already compiled and loaded. Please reply at soumendu.dasgupta@gmail.com Thanks |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
how to set periodic boundary conditions | Ganesh | FLUENT | 15 | November 18, 2020 06:09 |
The gradient of void fraction in UDF | summer | FLUENT | 2 | May 20, 2011 03:34 |
UDF for Species Mass Fraction Gradient *IN SPECIFIC ZONE * -- e.g. along axis of sym. | ksiegs2 | Fluent UDF and Scheme Programming | 0 | February 27, 2011 12:55 |
Help on accessing volume fraction in mixture model | achuneka | FLUENT | 8 | September 4, 2009 06:22 |
[blockMesh] Axisymmetrical mesh | Rasmus Gjesing (Gjesing) | OpenFOAM Meshing & Mesh Conversion | 10 | April 2, 2007 14:00 |