Worufu wrote: ↑
Sun Sep 10, 2017 9:44 am
Can you print a 3D view with streamline around the house?
I am not familiar with paraview, but I hope you mean the pic below.
Just started with doing some tutorials from
For the calculation of the house I used a 60x20x0,5 m "wind-tunnel".
Fluid is water with 0,001 m^2/s viscosity / 1000 kg/m^3 density, inlet speed is 2,45 m/s.
This gives the same pressure like air at 250 km/h with 1,25 kg/m^3 density.
If you use the real windspeed you need a much finer mesh and excessive calculation time. Too hard stuff for
my steam-driven laptop. I have done the same with a wind-tunnel of 6x2x0,1 m simulating the
aerodynamic forces on a cylinder (D=400 mm). The viscosity is 0,001 m^2/s, density 1000 kg/m^3, inlet speed 1,5 m/s.
This gives the same pressure as air at 150 km/h. The theoretical correct result is 360 N/m drag-force
according to german DIN-manuals. I get the best results with GMSH (325 N/m), no refinement. cfmesh nearly
computes the double force. All simulations are "steady" (simpleFoam) without turbulence.
I am interested in calculating the aerodynamic forces on antenna-masts.