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Showing results 1 to 12 of 12 Search took 0.00 seconds. Search: Posts Made By: HenrikS

Forum: Fluent UDF and Scheme Programming March 14, 2017, 01:41

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS Hi, The code in question will introduce two... Hi, The code in question will introduce two Define-on-Demand functions: set_wall_dist_udm0 reset_udm0 that use the user-defined memory location 0 to store the wall distances. The second...

Forum: Fluent UDF and Scheme Programming March 20, 2015, 03:38

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS There's an undocumented macro called that might... There's an undocumented macro called that might be useful (see below). However, I wouldn't recommend using something like this unless you know what you're doing. The safest bet is probably to define...

Forum: Fluent UDF and Scheme Programming January 9, 2015, 03:56

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS I don't think that these macros were ever covered... I don't think that these macros were ever covered by the manual. I just had a look in the source files for Fluent 15.0.7 and all of the following are there still: C_WALL_DIST(c,t)...

Forum: Fluent UDF and Scheme Programming January 8, 2015, 05:22

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS That error message most probably tells you that... That error message most probably tells you that C_WALL_DIST(c,t) has not been assigned a value (so that you receive an access violation when you try to retrieve it). I haven't worked with this macro...

Forum: Fluent UDF and Scheme Programming April 2, 2009, 06:18

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS You do not need to specify an expression for dS,... You do not need to specify an expression for dS, you can set it to 0.0. If you have convergence issues, consider adding an expression for dS. As I understand it, dS should then be the derivative with...

Forum: Fluent UDF and Scheme Programming April 2, 2009, 03:42

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS Yes, according to threads.h: THREAD_F_WALL... Yes, according to threads.h: THREAD_F_WALL = 3, so those should be the same.

Forum: Fluent UDF and Scheme Programming April 1, 2009, 08:23

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS Hmm... BOUNDARY_FACE_THREAD_P(t) expands to a... Hmm... BOUNDARY_FACE_THREAD_P(t) expands to a function that returns TRUE if Thread *t is a boundary face thread. I don't know for sure, maybe this would also include inlets and outlets. Then maybe...

Forum: Fluent UDF and Scheme Programming April 1, 2009, 08:11

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS How about begin_c_loop(c, t) { dist =... How about begin_c_loop(c, t) { dist = 0.0; c_face_loop(c, t, n) { if (BOUNDARY_FACE_THREAD_P(C_FACE_THREAD(c,t,n))) { dist = C_WALL_DIST(c,t);

Forum: Fluent UDF and Scheme Programming April 1, 2009, 07:58

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS You would also have to add some kind of check to... You would also have to add some kind of check to see whether the current cell is next to a boundary, if you are only interested in boundary cells (which seems the case in your first post).

Forum: Fluent UDF and Scheme Programming April 1, 2009, 07:56

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS It was quite some time ago since I worked with... It was quite some time ago since I worked with wall distances in UDFs, but I seem to remember that the distance between a cell centre and the nearest wall should be available in C_WALL_DISTANCE(c,t)....

Forum: Fluent UDF and Scheme Programming April 1, 2009, 07:07

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS In your code, you calculate "dist" for every cell... In your code, you calculate "dist" for every cell next to a wall boundary. My guess is that you want to use this value for some purpose elsewhere in your code. Now, there is a macro called...

Forum: Fluent UDF and Scheme Programming April 1, 2009, 06:37

Replies: 39 calculate distance from wall to neighbourig cell centroid Views: 17,932 Posted By HenrikS I think your code will do what you want, yes. If... I think your code will do what you want, yes. If you have any problems with if(THREAD_TYPE(tf) == THREAD_F_WALL) you might consider using if (BOUNDARY_FACE_THREAD(tf)) although I guess they would...

Showing results 1 to 12 of 12

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