|June 2, 2012, 03:13||
Computational domain for a blade cascade
Join Date: May 2012
Posts: 9Rep Power: 6
I am going to analyze the flow within a compressor blade passage and I know about the possibility to study a single blade, and then applying the periodic boundaries to the upper and lower side of the domain. My questions are:
- which are the shapes of the surfaces on which I have to apply the periodicity?
- how are these shapes affecting the results, i.e. how is the periodicity acting at the interfaces?
I attach a picture of a domain corresponding to my blade geometry that I found on some articles. Thanks in advance for any help!
|June 2, 2012, 06:28||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,832Rep Power: 100
Ideally the shape of the periodic boundary does not affect the results. There are a few pitfalls to avoid - like it should not cut through a blade (and if it has to it should do it perpendicular to the surface and not in a critical flow region), it should avoid the wake of the blade, and if possible it should avoid any shocks/rarefaction waves (but this can be very difficult to do, just minimise it as best you can).
But if you have a good mesh quality and a well converged solution you can get away with some of these sins.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Computational Domain... Help!!||devang5939||Main CFD Forum||0||April 5, 2012 18:23|
|Numerical errors in nested domain with pre-calculated boundary values||Arnoldinho||OpenFOAM Running, Solving & CFD||3||April 4, 2012 10:31|
|[ICEM] How to mesh a 3 lenz turbine blade in rotating domain||CTan22||ANSYS Meshing & Geometry||13||March 22, 2012 14:05|
|air bubble is disappear increasing time using vof||xujjun||CFX||9||June 9, 2009 07:59|
|CFX Solver Memory Error||mike||CFX||1||March 19, 2008 08:22|