|October 29, 2001, 07:00||
I am trying to model a stirred reactor in CFX4.4. I am using the slidding grid approach, where the impeller is moddeled as a moving block and baffles are as stationary block. Between the block I have unmached boundaries and periodic boundaries between the bafles and the inpeller blades (which form part of the inner block) -I have only one cell in the axial direction (K) -High K and low K are specified as symmetry planes.
When I run the solver, the convergence is poor with high oscilations. I get a warning message from the output file that: WARNING : THE TRANSIENT GRIDDING OPTION IS BEING USED WITHOUT A PRESSURE BOUNDARY THE FLOW HAS TO BE DEFINED CAREFULLY TO ENSURE MASS CONSERVATION
The top is a free surface, where do i go from here?. Can anybody help!!
|Thread||Thread Starter||Forum||Replies||Last Post|
|inlet velocity boundary condition||murali||CFX||5||August 3, 2012 08:56|
|Implementation of boundary conditions for FVM||Tom||Main CFD Forum||6||April 1, 2012 09:31|
|CFX doesn't continue calculation...||mactech001||CFX||6||November 15, 2009 21:25|
|Boundary conditions?||Tom||Main CFD Forum||0||November 5, 2002 01:54|
|Boundary Conditions||Jan Ramboer||Main CFD Forum||11||August 16, 1999 08:59|