Andy_RR
Well-Known Member
Hello all,
I have a pusher design I want to run some CFD on (OpenFOAM) but the propeller disc forms part of the (hoped for) aerodynamic flow patterns to minimize drag/separation at the back end of a Goldschmied body and so I am hoping for a relatively simple way to estimate the flow field of the propeller upstream and downstream
After reading up a little from here and there, I am thinking of modelling it as a disc outlet patch upstream with a specified velocity field based on an estimated swirl factor and perhaps another inlet patch downstream with another swirl-factor-derived flow vector field. I have, at the moment, no idea exactly how I will compute these fields and/or what swirl factor I might consider using, but wondering if anyone has tried anything similar.
I really don't want to get into modelling the blade á la Mr McGinnis's good work with CFD - looks like the mesh would smoke my poor laptop...
I have a pusher design I want to run some CFD on (OpenFOAM) but the propeller disc forms part of the (hoped for) aerodynamic flow patterns to minimize drag/separation at the back end of a Goldschmied body and so I am hoping for a relatively simple way to estimate the flow field of the propeller upstream and downstream
After reading up a little from here and there, I am thinking of modelling it as a disc outlet patch upstream with a specified velocity field based on an estimated swirl factor and perhaps another inlet patch downstream with another swirl-factor-derived flow vector field. I have, at the moment, no idea exactly how I will compute these fields and/or what swirl factor I might consider using, but wondering if anyone has tried anything similar.
I really don't want to get into modelling the blade á la Mr McGinnis's good work with CFD - looks like the mesh would smoke my poor laptop...
