|
[Sponsors] |
June 29, 1999, 20:01 |
Prescribed pressure at the boundary
|
#1 |
Guest
Posts: n/a
|
Hi all,
The boundary condition with constant velocity for SIMPLE-family algorithms is well described and coarse no problem. But how to construct finite-difference scheme for pressure-velocity coupling at the inflow boundary (and outflow too) with P=Const? Can anybody point out literature source (book, journal etc.) on this term? Any commence are welcome also. Thank you in advance, Dmitry |
|
June 30, 1999, 08:14 |
Re: Prescribed pressure at the boundary
|
#2 |
Guest
Posts: n/a
|
Hi,
Basically, you should set your pressure level at the first control volume inside the domain ( not the boundary point, usually the boundary point is not used to determine the pressure term in the momentum eq.), prescribe the pressure correction equal to zero, and ensure the mass conservation of this control volume using the continutity eq..Take a look at: Versteeg, HK, Malalasekera, W, An introduction to computational fluid dynamics - the finite volume method, Longman Scientific & Technical, Uk, 1995. I think this book contains a good description of the procedure. Cheers Neyval |
|
July 1, 1999, 08:25 |
Re: Prescribed pressure at the boundary
|
#3 |
Guest
Posts: n/a
|
Privet! Take a look at J.G.Heywood, R.Rannacher, S.Turek "Artificial boundaries and flux and pressure conditions for the incompressible N.S. equations" Int.J.Numer.Meth.Fluids, V.22 325-352 (1996).
And bythe way, I do pressure b.c., but for the finite elements, and basically have no problems. Gasan |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Pressure boundary condition | C-H Kuo | Main CFD Forum | 18 | September 16, 2016 03:19 |
Water subcooled boiling | Attesz | CFX | 7 | January 5, 2013 03:32 |
stagnation pressure boundary problem | mbgnfrx2 | STAR-CD | 2 | November 25, 2012 23:55 |
Gas pressure question | Dan Moskal | Main CFD Forum | 0 | October 24, 2002 22:02 |
what the result is negatif pressure at inlet | chong chee nan | FLUENT | 0 | December 29, 2001 05:13 |