CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Multiblock. Interface BC

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 19, 1998, 13:05
Default Multiblock. Interface BC
Kyros Yakinthos
Posts: n/a
Hello to everyone. Here is a question. Suppose that you have a multiblock grid topology. You solve the N-S equations in a non-staggered CV and you must find a condition concerning let's say the velocity at the grid connectivity interface between 2 connecting blocks (or for the mass at the face..). The momentum interpolation method is adopted to avoid the pressure wingles.You have a point-to-point matching interface.

What is the best way for the boundary condition there ? I've tryed a straightforward interpolation but the result was bad.

Any suggestion ? Thank you in advance
  Reply With Quote

Old   November 20, 1998, 08:39
Default Re: Multiblock. Interface BC
Franck Bertagnolio
Posts: n/a

Concerning your boundary conditions at interface between 2 connected blocks, instead of a simple interpolation, I guess that an interface boundary condition preserving the fluxes would give much better results.

Technically speaking, it should not be too difficult in your case since the interface is conformal (point-to-point matching interface). Then, you should be able to compute the fluxes (of mass, momentum...) at the faces of one block and enforcing the latter at the faces of the neighbouring block.

Good luck.
  Reply With Quote

Old   November 23, 1998, 18:58
Default Re: Multiblock. Interface BC
Hansong Tang
Posts: n/a
Your question sounds interesting. But, could you says some details about your problem? For instance, what's your numerical schemes in subzones? Is the flow compressible or incompressible?

We have done some research about schemes for grid interfaces. Maybe we can exchange ideas.

Hansong Tang

  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Wind turbine simulation Saturn CFX 34 October 16, 2014 05:27
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 05:05
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 21:09
Multiblock grid, interface Boundary condition Nandu CFX 2 August 6, 2002 05:07

All times are GMT -4. The time now is 06:52.