CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Far field BCs for incompressible fluids

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

LinkBack Thread Tools Display Modes
Old   October 30, 2000, 17:43
Default Far field BCs for incompressible fluids
Posts: n/a
Hi all,

My problem is straightforward (I guess!). I have an object (say sphere) in the centre of a domain (say box) representing an unconfined fluid. The front face of the box is the inlet, so the boundary can be easily assigned.

The other faces should be assigned far field conditions such that they do not constraint the fluid motion.

As I understood that one way is to make the derivatives of the velocity components w.r.t. the direction normal to the flow = 0. Mathematically dV/dx = 0 where V = V (Vx, Vy, Vz). The fluid is incompressible.

The solver that I am using is Fluent 5. How to implement this?

Does anybody have another way of doing it? And how to solve in Fluent 5.

Any suggestions would be appreciated Yours
  Reply With Quote

Old   October 31, 2000, 00:17
Default Re: Far field BCs for incompressible fluids
John C. Chien
Posts: n/a
(1). You may want to check the code to see if the far-field condition is one of the option you can select. (2). It is something a friend of mine used to solve his transonic problem over an object, a couple of years ago. (3). I am not sure whether it is still there in the current version. (also I don't know how it is implemented)
  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
problems after decomposing for running OpenFOAM 6 December 23, 2015 15:27
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
Dealing with BC's in OF 1.6 vkrastev OpenFOAM Running, Solving & CFD 5 September 4, 2012 11:58
free field modeling & BCs Serazio FLUENT 0 February 10, 2011 12:38
Problem with rhoSimpleFoam matteo_gautero OpenFOAM Running, Solving & CFD 0 February 28, 2008 07:51

All times are GMT -4. The time now is 22:22.