mesh alignment
Lucie Hasalova
I try to model a compartment fire using one uniform and one non-
uniform mesh. I use Pyrosim 2010 software to create geometry. When I
start FDS 5 a mesh alignment error occurs although the mesh alignment
test in Pyrosim says the meshes passed. I´ve read the mesh alignment
chapter id FDS 5 manual but I believe I obeyed all rules when creating
the non-uniform mesh. I cant see any mistake.
How can I resolve this?
Thank you
Lucie
This is my CFD code
&MESH ID='MESH', IJK=24,139,40,
XB=11.30,13.20,1.20,12.40,-0.2000,3.30/
&TRNX CC=11.46, PC=11.40, MESH_NUMBER=1/ MESH
&TRNX CC=11.78, PC=11.80, MESH_NUMBER=1/ MESH
&TRNX CC=11.93, PC=11.90, MESH_NUMBER=1/ MESH
&TRNX CC=12.01, PC=12.00, MESH_NUMBER=1/ MESH
&TRNX CC=12.17, PC=12.10, MESH_NUMBER=1/ MESH
&TRNX CC=12.57, PC=12.60, MESH_NUMBER=1/ MESH
&TRNX CC=12.72, PC=12.70, MESH_NUMBER=1/ MESH
&TRNX CC=13.04, PC=13.10, MESH_NUMBER=1/ MESH
&TRNY CC=1.76, PC=1.90, MESH_NUMBER=1/ MESH
&TRNY CC=1.93, PC=2.00, MESH_NUMBER=1/ MESH
&TRNY CC=2.25, PC=2.40, MESH_NUMBER=1/ MESH
&TRNY CC=2.41, PC=2.50, MESH_NUMBER=1/ MESH
&TRNY CC=2.81, PC=3.00, MESH_NUMBER=1/ MESH
&TRNY CC=2.97, PC=3.10, MESH_NUMBER=1/ MESH
&TRNY CC=3.29, PC=3.50, MESH_NUMBER=1/ MESH
&TRNY CC=3.46, PC=3.60, MESH_NUMBER=1/ MESH
&TRNY CC=3.78, PC=4.00, MESH_NUMBER=1/ MESH
&TRNY CC=4.10, PC=4.20, MESH_NUMBER=1/ MESH
&TRNY CC=4.42, PC=4.60, MESH_NUMBER=1/ MESH
&TRNY CC=4.58, PC=4.70, MESH_NUMBER=1/ MESH
&TRNY CC=4.91, PC=5.10, MESH_NUMBER=1/ MESH
&TRNY CC=5.87, PC=5.70, MESH_NUMBER=1/ MESH
&TRNY CC=6.12, PC=6.00, MESH_NUMBER=1/ MESH
&TRNY CC=6.28, PC=6.10, MESH_NUMBER=1/ MESH
&TRNY CC=6.52, PC=6.40, MESH_NUMBER=1/ MESH
&TRNY CC=6.84, PC=6.60, MESH_NUMBER=1/ MESH
&TRNY CC=7.65, PC=7.60, MESH_NUMBER=1/ MESH
&TRNY CC=7.97, PC=7.80, MESH_NUMBER=1/ MESH
&TRNY CC=8.21, PC=8.10, MESH_NUMBER=1/ MESH
&TRNY CC=8.37, PC=8.20, MESH_NUMBER=1/ MESH
&TRNY CC=8.77, PC=8.70, MESH_NUMBER=1/ MESH
&TRNY CC=9.10, PC=8.90, MESH_NUMBER=1/ MESH
&TRNY CC=9.34, PC=9.20, MESH_NUMBER=1/ MESH
&TRNY CC=9.50, PC=9.30, MESH_NUMBER=1/ MESH
&TRNY CC=9.98, PC=9.90, MESH_NUMBER=1/ MESH
&TRNY CC=10.31, PC=10.10, MESH_NUMBER=1/ MESH
&TRNY CC=11.11, PC=11.10, MESH_NUMBER=1/ MESH
&TRNY CC=11.43, PC=11.30, MESH_NUMBER=1/ MESH
&TRNY CC=12.24, PC=12.30, MESH_NUMBER=1/ MESH
&TRNZ CC=0.1500, PC=0.2000, MESH_NUMBER=1/ MESH
&TRNZ CC=0.3250, PC=0.3000, MESH_NUMBER=1/ MESH
&TRNZ CC=0.76, PC=0.80, MESH_NUMBER=1/ MESH
&TRNZ CC=0.94, PC=0.90, MESH_NUMBER=1/ MESH
&TRNZ CC=1.38, PC=1.40, MESH_NUMBER=1/ MESH
&TRNZ CC=1.55, PC=1.50, MESH_NUMBER=1/ MESH
&TRNZ CC=2.08, PC=2.10, MESH_NUMBER=1/ MESH
&TRNZ CC=2.25, PC=2.20, MESH_NUMBER=1/ MESH
&TRNZ CC=2.69, PC=2.70, MESH_NUMBER=1/ MESH
&TRNZ CC=2.86, PC=2.80, MESH_NUMBER=1/ MESH
&MESH ID='MESH02', IJK=29,118,35,
XB=8.40,11.30,0.60,12.40,-0.2000,3.30/
dr_jfloyd
axes.
We don't recommend trying to use stretched grids with multiple
meshes. To find out where the misalignment is run the case with
TWFIN=0, view the Smokeview file, turn on the grids, and move the grid
display through the domain looking for the misalignment. You can also
do this by opening the Smokeview file with a text editor and comparing
the grid locations for the two meshes.