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October 1, 2009, 13:01 |
Creating obstacles in the 3D-space
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#1 |
Member
Dennis Rown
Join Date: Oct 2009
Posts: 51
Rep Power: 17 |
Hello!
I'm new to OpenFOAM but worked with FDS so far and I am learning OpenFOAM since 2 days now. I just can't figure out if in OpenFOAM it is possible to create obstacles (like in FDS). So far I only figured out how to create walls in the blockMeshDict, but all the walls have to be attached to points and I would rather attach them to world-coordinates. I appreciate your help! Greets Dmitri |
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October 4, 2009, 14:46 |
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#2 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
Hi,
you should take a look at this http://code.google.com/p/firefoam-dev/ and I would recommend gmsh or snappyHexMesh in combination with blender... Fabian |
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October 5, 2009, 08:35 |
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#3 |
Member
Dennis Rown
Join Date: Oct 2009
Posts: 51
Rep Power: 17 |
Hello!
I tried both and i find gmsh really easy to get into, but Blender is kind of hard (although it looks more interesting). I mentioned that gmsh creates meshes using tetrahedra. I'm desperately searching for an option to create meshes using only hexahedra. Is there a possibility to switch to that? Greets Dmitri |
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October 5, 2009, 10:40 |
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#4 |
Member
Dennis Rown
Join Date: Oct 2009
Posts: 51
Rep Power: 17 |
Got it! Here's my source-code of the mesh:
// Gmsh project created on Mon Oct 05 14:56:41 2009 Point(1) = {0, 0, 0}; Point(2) = {1, 0, 0}; Point(3) = {1, 1, 0}; Point(4) = {0, 1, 0}; Point(5) = {0, 0, 1}; Point(6) = {1, 0, 1}; Point(7) = {1, 1, 1}; Point(8) = {0, 1, 1}; Line(1) = {5, 8}; Line(2) = {8, 4}; Line(3) = {4, 3}; Line(4) = {3, 2}; Line(5) = {2, 6}; Line(6) = {6, 5}; Line(7) = {5, 1}; Line(8) = {1, 4}; Line(9) = {1, 2}; Line(10) = {6, 7}; Line(11) = {7, 8}; Line(12) = {7, 3}; Line Loop(13) = {11, -1, -6, 10}; Plane Surface(14) = {13}; Line Loop(15) = {7, 8, -2, -1}; Plane Surface(16) = {15}; Line Loop(17) = {8, 3, 4, -9}; Plane Surface(18) = {17}; Line Loop(19) = {5, 10, 12, 4}; Plane Surface(20) = {19}; Line Loop(21) = {12, -3, -2, -11}; Plane Surface(22) = {21}; Line Loop(23) = {7, 9, 5, 6}; Plane Surface(24) = {23}; Surface Loop(25) = {14, 22, 20, 24, 16, 18}; Volume(26) = {25}; Transfinite Line {1} = 3 Using Bump 1; Transfinite Line {2} = 3 Using Bump 1; Transfinite Line {3} = 3 Using Bump 1; Transfinite Line {4} = 3 Using Bump 1; Transfinite Line {5} = 3 Using Bump 1; Transfinite Line {6} = 3 Using Bump 1; Transfinite Line {7} = 3 Using Bump 1; Transfinite Line {8} = 3 Using Bump 1; Transfinite Line {9} = 3 Using Bump 1; Transfinite Line {10} = 3 Using Bump 1; Transfinite Line {11} = 3 Using Bump 1; Transfinite Line {12} = 3 Using Bump 1; Transfinite Surface {14}; Recombine Surface{14}; Transfinite Surface {16}; Recombine Surface{16}; Transfinite Surface {18}; Recombine Surface{18}; Transfinite Surface {20}; Recombine Surface{20}; Transfinite Surface {22}; Recombine Surface{22}; Transfinite Surface {24}; Recombine Surface{24}; Transfinite Volume{26} = {1, 2, 3, 4, 5, 6, 7, 8}; |
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October 14, 2009, 16:51 |
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#5 |
New Member
Zhibin Chen
Join Date: Oct 2009
Posts: 2
Rep Power: 0 |
I think we are in the same river. hehe.
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