- **OpenFOAM**
(*https://www.cfd-online.com/Forums/openfoam/*)

- - **Scale discrete inlet velocity profile with groovyBC**
(*https://www.cfd-online.com/Forums/openfoam/76556-scale-discrete-inlet-velocity-profile-groovybc.html*)

Scale discrete inlet velocity profile with groovyBCHi,
for an inlet patch with approximately 3000 faces I have a discrete profile for inlet velocity. Putting these values in the U file sets a velocity vector to every single face. Generally setting an inlet velocity profile for a compressible flow will not exactly give a desired mass-flow. So I tried to scale the velocity field with groovyBC, to get an defined mass-flow. 3000 faces lead to 3 vectors (u, v, w) of length 3000. Trying to read such a vector with groovyBC gives the error: string "u=(-62.420493,-52.599637,-51.460724,-60.386578,-58.347571,-61.218533,-57.528353,..." is too long (max. 1024 characters) Is there a way to scale such long vectors with groovyBC? Thanks and a nice weekend, Christoph |

GroovyBC in cirdulation geometryhttp://i50.tinypic.com/2z4la3q.pngHi sir/Madam
I simulated circular geometry as polymer fluid in around of rotating screw in extruder. I possess some problem to describe boundary condition for movingWalls. I want to use groovyBC to specify velocity vectors (Ux,Uy,Uz) in movingWalls BC where is depend on places in face. I cannot define velocity function with C++ rules. Could you help me about coding this BC as C++ rules? Content of U file, 0file are presented as follow: Tnx in avanced your help class volVectorField; object U; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // dimensions [0 1 -1 0 0 0 0]; internalField uniform (0 0 0); boundaryField { inlet { type fixedValue; value uniform (0 0 10); } movingWalls { Velocity vectors calculated by (-0.0346*sin(teta) ,0.0346*cos(teta),0.4764) where angle range is between 0 to 2pi.} fixedWalls { type fixedValue; value uniform (0 0 0); } outlet { type zeroGradient; } } |

All times are GMT -4. The time now is 21:46. |