I am having problem creating a geometry because the CFX crashes whenever I perform the analysis. I am not sure if its the memory problem. I wonder if anyone has encounter this problem before. If yes, please let me know how I can solve the problem. I am doing a 3-D simulation that has 300000 elements. Thank you.

Regards, Chie Min

Can you offer the tips of this problem? maybe it is due to your poor 3-D geometry structures, such as you have some very thin surfaces or samll angles in them.

I have a fairly complicated geometry with 11 constraints. It is impossible for me to create the geometry without using the constraint.

The problem that I am facing is whenever I click apply on the Analysis form in CFX4.3, CFX crashes halfway through the analysis. It didn't give me any error message. It just crashes and I have to remesh the geometry and redo the analysis. I'm just wondering if this is a memory problem because I managed to create a .geo file when I mesh the geometry with less elements.

Chie Min

Are you using simple constraints or advanced constrains? You must avoid advanced constrains using multiblock structure.

I am using simple constraints.

Why not try andvanced constrain? Give you a sample examples got from jou file. $# Creating journal file /tmp/example/example.db.jou at 03-Sep-98 12:12:09 uil_file_rebuild.start("/CFX/4.2/build/4.2/IRIS_R4K/CFXBuild4_template.db", @ "/tmp/example/example.db") STRING asm_create_hpat_xyz_created_ids[VIRTUAL] asm_const_hpat_xyz( "1", "<6 6 6>", "[0 0 0]", "Coord 0", @ asm_create_hpat_xyz_created_ids ) $# 1 Hpat created: Hpat 1 ga_view_aa_set( 15.812492, 35.940708, -2.071282 ) STRING sgm_create_curve_2d_created_ids[VIRTUAL] sgm_const_curve_2d_circle_v1( "1", 1, 0.5, "Coord 0.3", "", "[2.5 2.5 0]", @ TRUE, sgm_create_curve_2d_created_ids ) $# 1 Curve Created: Curve 1 ga_view_aa_set( 12.729034, 40.647423, 13.039970 ) STRING sgm_curve_break_par_created_ids[VIRTUAL] sgm_edit_curve_break_parametric( "2", 0.5, "Curve 1 ", TRUE, @ sgm_curve_break_par_created_ids ) $# 2 Curves Created: Curves 2,3 $# Question from application SGM $# Do you wish to delete the original curves? $? YES 38000217 $# 1 Curve Deleted: Curve 1 uil_toolbar.labels_on( ) sgm_edit_curve_break_parametric( "4", 0.5, "Curve 2 3 ", TRUE, @ sgm_curve_break_par_created_ids ) $# 4 Curves Created: Curves 4:7 $# Question from application SGM $# Do you wish to delete the original curves? $? YES 38000217 $# 2 Curves Deleted: Curve 2 3 ga_view_aa_set( 1.631107, -0.130055, 10.927036 ) point_size( 8 ) STRING asm_transform_cord__created_ids[VIRTUAL] asm_transform_cord_translate( "1", "<2.5 2.5 0>", "Coord 0", 1, FALSE, @ "Coord 0", asm_transform_cord__created_ids ) $# 1 Coord created: Cord 1 STRING sgm_transform_curve_created_ids[VIRTUAL] sgm_transform_rotate( "8", "curve", "Coord 1.3 ", 15., 0., "Coord 0", 1, TRUE, @ "Curve 4:7 ", sgm_transform_curve_created_ids ) $# 4 Curves Created: Curves 8:11 $# Question from application SGM $# Do you wish to delete the original curves? $? YES 38000217 $# 4 Curves Deleted: Curve 4:7 ga_view_aa_set( 0., 0., 0. ) STRING sgm_surface_4edge_created_ids[VIRTUAL] sgm_const_surface_4edge( "1", "Curve 11 ", "Curve 8 ", "Curve 9 ", "Curve 10 " @ , sgm_surface_4edge_created_ids ) $# 1 Surface Created: Surface 1 STRING sgm_sweep_solid_ext_created_ids[VIRTUAL] sgm_const_solid_extrude( "2", "<0 0 -3>", 1., 0., "[0 0 0]", "Coord 0", @ "Surface 1 ", sgm_sweep_solid_ext_created_ids ) $# 1 Solid Created: Solid 2 STRING sgm_transform_solid_created_ids[VIRTUAL] sgm_transform_translate( "3", "solid", "<2 0 0>", "Coord 0", 1, FALSE, @ "Solid 2 ", sgm_transform_solid_created_ids ) $# 1 Solid Created: Solid 3 sgm_transform_translate( "4", "solid", "<0 2 0>", "Coord 0", 1, FALSE, @ "Solid 2 3", sgm_transform_solid_created_ids ) $# 2 Solids Created: Solids 4,5 STRING sgm_surface_2curve_created_ids[VIRTUAL] sgm_const_surface_2curve_man( "2", "Solid 5.2.2 ", "Solid 4.1.2 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 2 sgm_const_surface_2curve_man( "3", "Solid 4.3.1 ", "Curve 8 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 3 sgm_const_surface_2curve_man( "4", "Curve 11 ", "Solid 3.2.2 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 4 sgm_const_surface_2curve_man( "5", "Solid 3.4.1 ", "Solid 5.3.1 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 5 sgm_const_surface_2curve_man( "6", "Surface 2.1 ", "Surface 4.2 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 6 STRING asm_create_grid_pro_created_ids[VIRTUAL] asm_const_grid_project_v1( "45", "Point 15 ", "Solid 2.1 ", 1, FALSE, 1, @ "<0 0 0>", "Coord 0", asm_create_grid_pro_created_ids ) asm_const_grid_project_v1( "45", "Point 15 16 24 21 ", "Solid 1.3 ", 1, FALSE, @ 1, "<0 0 0>", "Coord 0", asm_create_grid_pro_created_ids ) $# 4 Points Created: Points 45:48 asm_const_grid_project_v1( "49", "Point 21 22 37 38 ", "Solid 1.2 ", 1, FALSE, @ 1, "<0 0 0>", "Coord 0", asm_create_grid_pro_created_ids ) $# 4 Points Created: Points 49:52 asm_const_grid_project_v1( "53", "Point 31 30 39 38 ", "Solid 1.4 ", 1, FALSE, @ 1, "<0 0 0>", "Coord 0", asm_create_grid_pro_created_ids ) $# 4 Points Created: Points 53:56 asm_const_grid_project_v1( "57", "Point 31 32 14 15 ", "Solid 1.1 ", 1, FALSE, @ 1, "<0 0 0>", "Coord 0", asm_create_grid_pro_created_ids ) $# 4 Points Created: Points 57:60 STRING asm_line_2point_created_ids[VIRTUAL] asm_const_line_2point( "12", "Point 45 ", "Point 46 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 12 asm_const_line_2point( "13", "Point 47 ", "Point 48 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 13 asm_const_line_2point( "14", "Point 49 ", "Point 50 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 14 asm_const_line_2point( "15", "Point 51 ", "Point 52 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 15 asm_const_line_2point( "16", "Point 56 ", "Point 55 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 16 asm_const_line_2point( "17", "Point 54 ", "Point 53 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 17 asm_const_line_2point( "18", "Point 57 ", "Point 58 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 18 asm_const_line_2point( "19", "Point 59 ", "Point 60 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 19 $# UNDO: Create Surface 2Curve for Curve 12 Solid 3.3.1 STRING sgm_surface_2curve_created_ids[VIRTUAL] sgm_const_surface_2curve_man( "7", "Curve 10 ", "Curve 12 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 7 sgm_const_surface_2curve_man( "8", "Solid 3.3.1 ", "Curve 13 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 8 sgm_const_surface_2curve_man( "9", "Solid 3.1.2 ", "Curve 14 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 9 sgm_const_surface_2curve_man( "10", "Solid 5.1.2 ", "Curve 15 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 10 sgm_const_surface_2curve_man( "11", "Solid 5.4.1 ", "Curve 16 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 11 sgm_const_surface_2curve_man( "12", "Solid 4.4.1 ", "Curve 17 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 12 sgm_const_surface_2curve_man( "13", "Solid 4.2.2 ", "Curve 18 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 13 sgm_const_surface_2curve_man( "14", "Curve 9 ", "Curve 19 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 14 sgm_const_surface_2curve_man( "15", "Surface 13.1 ", "Surface 14.4 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 15 sgm_const_surface_2curve_man( "16", "Surface 7.2 ", "Surface 8.3 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 16 sgm_const_surface_2curve_man( "17", "Surface 9.2 ", "Surface 10.4 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 17 sgm_const_surface_2curve_man( "18", "Surface 11.2 ", "Surface 12.4 ", @ "Solid 1.5 ", FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 18 asm_const_line_2point( "20", "Point 2 ", "Point 57 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 20 asm_const_line_2point( "21", "Point 60 ", "Point 1 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 21 asm_const_line_2point( "22", "Point 4 ", "Point 49 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 22 asm_const_line_2point( "23", "Point 52 ", "Point 3 ", 0, "", 50., 1, @ asm_line_2point_created_ids ) $# 1 Line created: Line 23 sgm_const_surface_2curve_man( "19", "Curve 20 ", "Surface 12.2 ", "Solid 1.5 " @ , FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 19 sgm_const_surface_2curve_man( "20", "Curve 21 ", "Surface 7.4 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 20 sgm_const_surface_2curve_man( "21", "Surface 8.1 ", "Curve 22 ", "Solid 1.5 ", @ FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 21 sgm_const_surface_2curve_man( "22", "Surface 11.4 ", "Curve 23 ", "Solid 1.5 " @ , FALSE, sgm_surface_2curve_created_ids ) $# 1 Surface Created: Surface 22 constraint_create_advanced( "Solid 1.5 ", @ "Surface 1:22 Solid 3.5 4.5 5.5 " ) ga_view_aa_set( 1.007857, 9.999538, -0.053141 ) STRING sgm_associate_cu_associated_ids[VIRTUAL] sgm_associate_curve_curve( "Curve 18 ", "Solid 1.1.4 ", @ sgm_associate_cu_associated_ids ) $# 1 Curve : Curve 18 associated to 1 Curve : Solid 1.1.4 sgm_associate_curve_curve( "Curve 19 ", "Solid 1.1.4 ", @ sgm_associate_cu_associated_ids ) $# 1 Curve : Curve 19 associated to 1 Curve : Solid 1.1.4 sgm_associate_curve_curve( "Curve 12 13 ", "Solid 1.3.1 ", @ sgm_associate_cu_associated_ids ) $# 2 Curves : Curve 12 13 associated to 1 Curve : Solid 1.3.1 sgm_associate_curve_curve( "Curve 14 15 ", "Solid 1.2.4 ", @ sgm_associate_cu_associated_ids ) $# 2 Curves : Curve 14 15 associated to 1 Curve : Solid 1.2.4 sgm_associate_curve_curve( "Curve 16 17 ", "Solid 1.4.1 ", @ sgm_associate_cu_associated_ids ) $# 2 Curves : Curve 16 17 associated to 1 Curve : Solid 1.4.1 ui_exec_function( "mesh_seed_display_mgr", "init" ) mesh_seed_create( "Curve 18 19 12:17 ", 1, 6, 0., 0., 0. ) INTEGER fem_create_mesh_surfa_num_nodes INTEGER fem_create_mesh_surfa_num_elems STRING fem_create_mesh_s_nodes_created[VIRTUAL] STRING fem_create_mesh_s_elems_created[VIRTUAL] fem_create_mesh_surf_2( "IsoMesh", 0, "Surface 1:22 Solid 1.2 1.3 1.4 1.6 " // @ "1.1 1.5 2.1 2.4 2.5 2.6 2.2 2.3 3.4 3.3 3.2 3.1 3.5 3.6 4.1 4.4 4.3 4.2 4" // @ ".6 4.5 5.1 5.2 5.4 5.6 5.5 5.3 ", 1, [0.5], "Quad4", "1", "1", "Coord 0", @ "Coord 0", fem_create_mesh_surfa_num_nodes, fem_create_mesh_surfa_num_elems, @ fem_create_mesh_s_nodes_created, fem_create_mesh_s_elems_created ) $# 49 nodes and 36 elements created for Surface 1. $# 28 nodes and 18 elements created for Surface 2. $# 28 nodes and 18 elements created for Surface 3. $# 28 nodes and 18 elements created for Surface 4. $# 28 nodes and 18 elements created for Surface 5. $# 16 nodes and 9 elements created for Surface 6. $# 35 nodes and 24 elements created for Surface 7. $# 35 nodes and 24 elements created for Surface 8. $# 21 nodes and 12 elements created for Surface 9. $# 21 nodes and 12 elements created for Surface 10. $# 21 nodes and 12 elements created for Surface 11. $# 21 nodes and 12 elements created for Surface 12. $# 35 nodes and 24 elements created for Surface 13. $# 35 nodes and 24 elements created for Surface 14. $# 20 nodes and 12 elements created for Surface 15. $# 20 nodes and 12 elements created for Surface 16. $# 12 nodes and 6 elements created for Surface 17. $# 12 nodes and 6 elements created for Surface 18. $# 15 nodes and 8 elements created for Surface 19. $# 25 nodes and 16 elements created for Surface 20. $# 15 nodes and 8 elements created for Surface 21. $# 9 nodes and 4 elements created for Surface 22. $# 286 nodes and 252 elements created for Solid 1.2. $# 286 nodes and 252 elements created for Solid 1.3. $# 286 nodes and 252 elements created for Solid 1.4. $# 484 nodes and 441 elements created for Solid 1.6. $# 286 nodes and 252 elements created for Solid 1.1. $# 484 nodes and 441 elements created for Solid 1.5. $# 49 nodes and 36 elements created for Solid 2.1. $# 49 nodes and 36 elements created for Solid 2.4. $# 49 nodes and 36 elements created for Solid 2.6. $# 49 nodes and 36 elements created for Solid 2.2. $# 49 nodes and 36 elements created for Solid 2.3. $# 49 nodes and 36 elements created for Solid 3.4. $# 49 nodes and 36 elements created for Solid 3.3. $# 49 nodes and 36 elements created for Solid 3.2. $# 49 nodes and 36 elements created for Solid 3.1. $# 49 nodes and 36 elements created for Solid 3.5. $# 49 nodes and 36 elements created for Solid 3.6. $# 49 nodes and 36 elements created for Solid 4.1. $# 49 nodes and 36 elements created for Solid 4.4. $# 49 nodes and 36 elements created for Solid 4.3. $# 49 nodes and 36 elements created for Solid 4.2. $# 49 nodes and 36 elements created for Solid 4.6. $# 49 nodes and 36 elements created for Solid 4.5. $# 49 nodes and 36 elements created for Solid 5.1. $# 49 nodes and 36 elements created for Solid 5.2. $# 49 nodes and 36 elements created for Solid 5.4. $# 49 nodes and 36 elements created for Solid 5.6. $# 49 nodes and 36 elements created for Solid 5.5. $# 49 nodes and 36 elements created for Solid 5.3. $# === 3768 nodes created. IDs = 1:3768. $# === 3051 elements created. IDs = 1:3051. uil_toolbar.labels_off( ) mesh_seed_display_mgr.erase( ) cfx4_anal_apply.apply3( "Solid 1:5 ", 2., 4., 4., 0, [""], "", TRUE, FALSE, @ FALSE, FALSE, TRUE, "(x,y,z)", 1., 1., 1. )