|
[Sponsors] |
April 28, 2006, 02:42 |
for help about gradient of UDM
|
#1 |
Guest
Posts: n/a
|
my programe as folows, it can be compiled but can not work.it is the message form the FLUENT the Error: 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: ()
any suggestions and advisor is appreciated. please help me,thanks a lot! #include "udf.h" #define ANM 8 void calgra(int indx,cell_t c,Thread *thread) { Thread *tf,*t1; face_t f; cell_t c1; real x[ND_ND],detx,dety; real dxdx,dydy,dxdy,dvardx,dvardy; real varx,vary,undervar; real adjac[ANM][2],adjvar[ANM]; int i,j,k,m; int n; for(i=0;i<ANM;i++) for(j=0;j<2;j++){ adjac[i][j]=0.;adjvar[i]=0.; } C_CENTROID(x,c,thread); adjac[0][0]=x[0]; adjac[0][1]=x[1]; adjvar[0]=C_UDMI(c,thread,indx); k=1; c_face_loop(c,thread,n) { f=C_FACE(c,thread,n); tf=C_FACE_THREAD(c,thread,n); if(NULL!=F_C1_THREAD(f,tf)) { t1=F_C1_THREAD(f,tf); c1=F_C1(f,tf); C_CENTROID(x,c1,t1); adjac[k][0]=x[0]; adjac[k][1]=x[1]; adjvar[k]=C_UDMI(c1,t1,indx); k++; } } dxdx=0.;dydy=0.;dxdy=0.; dvardx=0.;dvardy=0.; for(m=1;m<k;m++) { dxdx+=(adjac[m][0]-adjac[0][0])*(adjac[m][0]-adjac[0][0]); dydy+=(adjac[m][1]-adjac[0][1])*(adjac[m][1]-adjac[0][1]); dxdy+=(adjac[m][0]-adjac[0][0])*(adjac[m][1]-adjac[0][1]); dvardx+=(adjac[m][0]-adjac[0][0])*(adjvar[m]-adjvar[0]); dvardy+=(adjac[m][1]-adjac[0][1])*(adjvar[m]-adjvar[0]); } undervar=dxdx*dydy-dxdy*dxdy; varx=dvardx*dydy-dvardy*dxdy; vary=dvardy*dxdx-dvardx*dxdy; C_UDMI(c,thread,1)=varx/undervar; C_UDMI(c,thread,2)=vary/undervar; } |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Segmentation violation | louiza | FLUENT | 16 | June 27, 2017 16:41 |
specified shear at wall - temperature gradient - UDF - access violation error | senD | Fluent UDF and Scheme Programming | 9 | September 18, 2014 08:29 |
How could I get the gradient of UDM? | fireman | FLUENT | 2 | February 8, 2011 06:36 |
can I use static enthalpy gradient to describe dT | Jay | CFX | 0 | August 7, 2008 00:01 |
How to compute gradient for non-orthogonal grids? | Paul Hsieh | Main CFD Forum | 3 | November 11, 2003 05:52 |