# INP File Modification **URL:** \ **Category:** Uncategorized\ **Created:** [December 6, 2023, 11:58am UTC](https://calculix.discourse.group/t/inp-file-modification/1953 "2023-12-06T11:58:40Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Bhavita](https://avatars.discourse-cdn.com/v4/letter/b/b782af/32.png) [@Bhavita](https://calculix.discourse.group/u/Bhavita)\ **Post date:** [December 6, 2023, 11:58am UTC](https://calculix.discourse.group/t/inp-file-modification/1953/1 "2023-12-06T11:58:40Z")
![Screenshot 2023-12-06 170135](https://global.discourse-cdn.com/free1/uploads/calculix/original/2X/e/e0627917afa4e75858878d938b3bb14f5e2caf74.jpeg) I need assistance in applying heat flux to all faces, except the fixed bottom face, as shown in attached image. I would like to achieve this by modifying the INP file. Additionally, I have attached the INP file for reference. Can someone provide guidance on how to implement this? \*\* Nodes \*Node, NSET=Nall 1, 0, 0, 0 2, 0, 10, 0 3, 10, 0, 0 4, 10, 10, 0 5, 0, 1.666666666667, 0 6, 0, 3.333333333333, 0 7, 0, 5, 0 8, 0, 6.666666666667, 0 9, 0, 8.333333333333, 0 10, 10, 1.666666666667, 0 11, 10, 3.333333333333, 0 12, 10, 5, 0 13, 10, 6.666666666667, 0 14, 10, 8.333333333333, 0 15, 1.666666666667, 0, 0 16, 3.333333333333, 0, 0 17, 5, 0, 0 18, 6.666666666667, 0, 0 19, 8.333333333333, 0, 0 20, 1.666666666667, 10, 0 21, 3.333333333333, 10, 0 22, 5, 10, 0 23, 6.666666666667, 10, 0 24, 8.333333333333, 10, 0 25, 5.033137425324, 4.978063957884, 0 26, 7.087591793448, 7.068215154276, 0 27, 7.078275217186, 2.865209698905, 0 28, 2.931784845724, 7.087591793448, 0 29, 2.912408206552, 2.931784845724, 0 30, 7.87126661107, 4.991423560575, 0 31, 5.008576439425, 7.87126661107, 0 32, 5, 2.202380952381, 0 33, 2.12873338893, 5.008576439425, 0 34, 1.761627594504, 1.7640496744, 0 35, 1.7640496744, 8.238372405496, 0 36, 8.237207833464, 1.755727781048, 0 37, 8.238372405496, 8.2359503256, 0 38, 5.706406138087, 6.495039931862, 0 39, 6.823527081542, 4.196165460175, 0 40, 3.60119047619, 5.684523809524, 0 41, 4.315476190476, 3.60119047619, 0 42, 3.580048256731, 8.418731893773, 0 43, 8.441548847079, 3.533044056982, 0 44, 1.581268106227, 3.580048256731, 0 45, 3.558899127101, 1.631262966058, 0 46, 6.445452125469, 8.393005315585, 0 47, 8.418731893773, 6.419951743269, 0 48, 6.460665087954, 1.559133949858, 0 49, 1.620741885565, 6.442326078531, 0 50, 4.401138915215, 6.680019889781, 0 51, 3.324641006342, 4.397800211029, 0 52, 5.78518016708, 3.233690749232, 0 53, 6.823443490541, 5.691476634674, 0 54, 7.424468230354, 0.8287154327265, 0 55, 0.8461978899913, 7.420174621007, 0 56, 7.420956132741, 9.157238910296, 0 57, 9.164276074817, 7.413975517217, 0 58, 2.580131680401, 0.8488281601145, 0 59, 0.8357239251826, 2.586024482783, 0 60, 9.169689170136, 2.572192959508, 0 61, 2.586024482783, 9.164276074817, 0 62, 9.142926434707, 9.142320914733, 0 63, 9.142635291699, 0.8555986119286, 0 64, 0.8576790852667, 9.142926434707, 0 65, 0.8570735652926, 0.8576790852667, 0 66, 0, 0, 10 67, 0, 10, 10 68, 10, 0, 10 69, 10, 10, 10 70, 0, 0, 1.666666666667 71, 0, 0, 3.333333333333 72, 0, 0, 5 73, 0, 0, 6.666666666667 74, 0, 0, 8.333333333333 75, 0, 1.666666666667, 10 76, 0, 3.333333333333, 10 77, 0, 5, 10 78, 0, 6.666666666667, 10 79, 0, 8.333333333333, 10 80, 0, 10, 1.666666666667 81, 0, 10, 3.333333333333 82, 0, 10, 5 83, 0, 10, 6.666666666667 84, 0, 10, 8.333333333333 85, 10, 0, 1.666666666667 86, 10, 0, 3.333333333333 87, 10, 0, 5 88, 10, 0, 6.666666666667 89, 10, 0, 8.333333333333 90, 10, 1.666666666667, 10 91, 10, 3.333333333333, 10 92, 10, 5, 10 93, 10, 6.666666666667, 10 94, 10, 8.333333333333, 10 95, 10, 10, 1.666666666667 96, 10, 10, 3.333333333333 97, 10, 10, 5 98, 10, 10, 6.666666666667 99, 10, 10, 8.333333333333 100, 1.666666666667, 0, 10 101, 3.333333333333, 0, 10 102, 5, 0, 10 103, 6.666666666667, 0, 10 104, 8.333333333333, 0, 10 105, 1.666666666667, 10, 10 106, 3.333333333333, 10, 10 107, 5, 10, 10 108, 6.666666666667, 10, 10 109, 8.333333333333, 10, 10 110, 0, 5.033137425324, 4.978063957884 111, 0, 7.087591793448, 7.068215154276 112, 0, 2.931784845724, 7.087591793448 113, 0, 7.078275217186, 2.865209698905 114, 0, 2.912408206552, 2.931784845724 115, 0, 5.008576439425, 7.87126661107 116, 0, 7.87126661107, 4.991423560575 117, 0, 5, 2.202380952381 118, 0, 2.12873338893, 5.008576439425 119, 0, 1.761627594504, 1.7640496744 120, 0, 1.7640496744, 8.238372405496 121, 0, 8.237207833464, 1.755727781048 122, 0, 8.238372405496, 8.2359503256 123, 0, 5.706406138087, 6.495039931862 124, 0, 6.823527081542, 4.196165460175 125, 0, 3.60119047619, 5.684523809524 126, 0, 4.315476190476, 3.60119047619 127, 0, 3.580048256731, 8.418731893773 128, 0, 8.441548847079, 3.533044056982 129, 0, 1.581268106227, 3.580048256731 130, 0, 3.558899127101, 1.631262966058 131, 0, 6.445452125469, 8.393005315585 132, 0, 8.418731893773, 6.419951743269 133, 0, 6.460665087954, 1.559133949858 134, 0, 1.620741885565, 6.442326078531 135, 0, 4.401138915215, 6.680019889781 136, 0, 3.324641006342, 4.397800211029 137, 0, 5.78518016708, 3.233690749232 138, 0, 6.823443490541, 5.691476634674 139, 0, 7.424468230354, 0.8287154327265 140, 0, 0.8461978899913, 7.420174621007 141, 0, 7.420956132741, 9.157238910296 142, 0, 9.164276074817, 7.413975517217 143, 0, 2.580131680401, 0.8488281601145 144, 0, 0.8357239251826, 2.586024482783 145, 0, 9.169689170136, 2.572192959508 146, 0, 2.586024482783, 9.164276074817 147, 0, 9.142926434707, 9.142320914733 148, 0, 0.8576790852667, 9.142926434707 149, 0, 9.142635291699, 0.8555986119286 150, 0, 0.8570735652926, 0.8576790852667 151, 10, 5.033137425324, 4.978063957884 152, 10, 7.087591793448, 7.068215154276 153, 10, 7.078275217186, 2.865209698905 154, 10, 2.931784845724, 7.087591793448 155, 10, 2.912408206552, 2.931784845724 156, 10, 5.008576439425, 7.87126661107 157, 10, 7.87126661107, 4.991423560575 158, 10, 5, 2.202380952381 159, 10, 2.12873338893, 5.008576439425 160, 10, 1.761627594504, 1.7640496744 161, 10, 1.7640496744, 8.238372405496 162, 10, 8.237207833464, 1.755727781048 163, 10, 8.238372405496, 8.2359503256 164, 10, 5.706406138087, 6.495039931862 165, 10, 6.823527081542, 4.196165460175 166, 10, 3.60119047619, 5.684523809524 167, 10, 4.315476190476, 3.60119047619 168, 10, 3.580048256731, 8.418731893773 169, 10, 8.441548847079, 3.533044056982 170, 10, 1.581268106227, 3.580048256731 171, 10, 3.558899127101, 1.631262966058 172, 10, 6.445452125469, 8.393005315585 173, 10, 8.418731893773, 6.419951743269 174, 10, 6.460665087954, 1.559133949858 175, 10, 1.620741885565, 6.442326078531 176, 10, 4.401138915215, 6.680019889781 177, 10, 3.324641006342, 4.397800211029 178, 10, 5.78518016708, 3.233690749232 179, 10, 6.823443490541, 5.691476634674 180, 10, 7.424468230354, 0.8287154327265 181, 10, 0.8461978899913, 7.420174621007 182, 10, 7.420956132741, 9.157238910296 183, 10, 9.164276074817, 7.413975517217 184, 10, 2.580131680401, 0.8488281601145 185, 10, 0.8357239251826, 2.586024482783 186, 10, 9.169689170136, 2.572192959508 187, 10, 2.586024482783, 9.164276074817 188, 10, 9.142926434707, 9.142320914733 189, 10, 9.142635291699, 0.8555986119286 190, 10, 0.8576790852667, 9.142926434707 191, 10, 0.8570735652926, 0.8576790852667 192, 4.978063957884, 0, 5.033137425324 193, 7.068215154276, 0, 7.087591793448 194, 2.865209698905, 0, 7.078275217186 195, 7.087591793448, 0, 2.931784845724 196, 2.931784845724, 0, 2.912408206552 197, 7.87126661107, 0, 5.008576439425 198, 4.991423560575, 0, 7.87126661107 199, 2.202380952381, 0, 5 200, 5.008576439425, 0, 2.12873338893 201, 1.7640496744, 0, 1.761627594504 202, 8.238372405496, 0, 1.7640496744 203, 1.755727781048, 0, 8.237207833464 204, 8.2359503256, 0, 8.238372405496 205, 6.495039931862, 0, 5.706406138087 206, 4.196165460175, 0, 6.823527081542 207, 5.684523809524, 0, 3.60119047619 208, 3.60119047619, 0, 4.315476190476 209, 8.418731893773, 0, 3.580048256731 210, 3.533044056982, 0, 8.441548847079 211, 3.580048256731, 0, 1.581268106227 212, 1.631262966058, 0, 3.558899127101 213, 8.393005315585, 0, 6.445452125469 214, 6.419951743269, 0, 8.418731893773 215, 1.559133949858, 0, 6.460665087954 216, 6.442326078531, 0, 1.620741885565 217, 4.397800211029, 0, 3.324641006342 \*\* Volume elements \*Element, TYPE=C3D4, ELSET=Evolumes 697, 319, 178, 326, 341 698, 321, 301, 325, 343 699, 320, 260, 324, 342 700, 341, 178, 326, 365 701, 301, 325, 343, 366 702, 260, 324, 342, 364 703, 211, 58, 226, 357 704, 315, 321, 326, 344 705, 315, 320, 325, 346 706, 324, 315, 319, 345 707, 344, 322, 315, 361 708, 322, 315, 345, 362 709, 346, 322, 315, 363 710, 316, 49, 28, 360 711, 134, 112, 318, 358 712, 216, 195, 317, 359 713, 143, 59, 130, 357 714, 178, 153, 174, 319 715, 260, 236, 256, 320 716, 276, 297, 301, 321 717, 326, 322, 315, 344 718, 325, 322, 315, 346 719, 322, 315, 324, 345 720, 305, 295, 265, 356 721, 182, 172, 306, 356 722, 256, 262, 142, 353 723, 297, 303, 224, 354 724, 180, 57, 174, 355 725, 318, 215, 194, 332 726, 133, 113, 316, 331 727, 317, 48, 27, 330 728, 139, 133, 55, 351 729, 54, 48, 222, 352 730, 140, 221, 215, 350 731, 236, 256, 320, 334 732, 321, 276, 297, 335 733, 153, 174, 319, 336 734, 211, 323, 333, 359 735, 310, 268, 251, 353 736, 269, 186, 169, 355 737, 187, 309, 292, 354 738, 178, 319, 326, 362 739, 301, 321, 325, 361 740, 260, 320, 324, 363 741, 292, 276, 321, 335 742, 251, 236, 320, 334 743, 319, 169, 153, 336 744, 317, 27, 48, 338 745, 194, 215, 318, 340 746, 113, 133, 316, 339 747, 322, 275, 296, 337 \*\* Define element set Eall \*ELSET, ELSET=Eall Evolumes * * * \*\* Element sets for materials and FEM element type (solid, shell, beam, fluid) \*ELSET,ELSET=MaterialSolidSolid Evolumes * * * \*\* constraints fixed node sets \*\* ConstraintFixed \*NSET,NSET=ConstraintFixed 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35, 36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65, * * * \*\* Materials \*\* see information about units at file end \*\* FreeCAD material name: ABS \*\* MaterialSolid \*MATERIAL, NAME=MaterialSolid \*ELASTIC 2300,0.37 * * * \*\* Sections \*SOLID SECTION, ELSET=MaterialSolidSolid, MATERIAL=MaterialSolid * * * \*\* At least one step is needed to run an CalculiX analysis of FreeCAD \*STEP \*STATIC * * * \*\* Fixed Constraints \*\* ConstraintFixed \*BOUNDARY ConstraintFixed,1 ConstraintFixed,2 ConstraintFixed,3 * * * \*\* Outputs → frd file \*NODE FILE U \*EL FILE S, E \*\* outputs → dat file \*\* reaction forces for Constraint fixed \*NODE PRINT, NSET=ConstraintFixed, TOTALS=ONLY RF * * * \*END STEP Regards, Bhavita ---
**Author:** ![Calc\_em](https://avatars.discourse-cdn.com/v4/letter/c/43a26b/32.png) [@Calc\_em](https://calculix.discourse.group/u/Calc_em)\ **Post date:** [December 6, 2023, 12:21pm UTC](https://calculix.discourse.group/t/inp-file-modification/1953/2 "2023-12-06T12:21:49Z")
You need sets for that but also element face labels (as described here: [How to set Heat transfer coefficient value](https://calculix.discourse.group/t/how-to-set-heat-transfer-coefficient-value/1925)). It would be quite tedious to do it manually. That’s what preprocessor do for us. In FreeCAD FEM workbench you can apply heat flux to those faces and edit the input file to see how it’s done.