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

how to deal with the boundary conditions in SPH ?

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

LinkBack Thread Tools Display Modes
Old   June 16, 1999, 07:20
Default how to deal with the boundary conditions in SPH ?
liu xiao
Posts: n/a
Hi, everyone,

How to deal with boundary conditions in the Smoothed particle hydrodynamics ?

Thank you
  Reply With Quote

Old   June 16, 1999, 10:13
Default Re: how to deal with the boundary conditions in SPH ?
Patrick Godon
Posts: n/a
Hi THere,

For open boundaries there is no problem, you can just assume that once a 'particle' is far from you computational domain then it has to be removed. In regions where the number of particles becomes fairly small, the flow is not represented accurately and the results are much less accurate (regions of low density), that's another problem you have to take into account.

For rigid boundaries it is more tricky and I have heard of several ways of implementing the rigid boundary conditions. The simplest thing is just to 'fix' particles at the location of the boundary and not allowing them to move Another method is to put a potential barrier that the particles would not be able to 'cross'.

I am sure if you make a litterature search for Joe J. Monaghan, you should find enough papers to answer all you questions. Since your question is quite general it is difficult to go into more details.

I hope this helps. Patrick.
  Reply With Quote

Old   June 17, 1999, 19:58
Default Re: how to deal with the boundary conditions in SPH ?
Tony Chen
Posts: n/a
Hi, I found one: Monaghan, JJ (1994), "Simulating Free Surface Flows with SPH", J of Computational Physics, V110, pp.399-406.
  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
non reflective boundary conditions for incompresible flow Pascal_doran OpenFOAM Programming & Development 16 August 25, 2015 05:35
symmetry boundary conditions in cfx lost.identity CFX 41 May 22, 2013 07:21
boundary conditions and mesh exporting vaina74 Open Source Meshers: Gmsh, Netgen, CGNS, ... 2 May 27, 2010 09:38
Concentric tube heat exchanger (Air-Water) Young CFX 5 October 6, 2008 23:17
Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 2 July 15, 2005 04:15

All times are GMT -4. The time now is 13:21.