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

Zero Pressure Flat Plate CFD++

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

LinkBack Thread Tools Display Modes
Old   January 13, 2014, 13:09
Default Zero Pressure Flat Plate CFD++
New Member
Join Date: Mar 2012
Posts: 8
Rep Power: 7
beyonder is on a distinguished road
Hi, I'm trying to perform a trasient simulation of a subsonic flow over a
flat plate in CFD++.
I want to impose a ramp profile on the velocity at the inlet, like for
instance a smooth step, and look at the evolution of the boundary layer
over the plate due to this acceleration.
I want to perform this simulation without pressure gradient so I'm imposing
a back pressure value in outflow BC. The problem is that once I start the
acceleration at the inlet it creates a pressure gradient that travels to
the outlet, and since the pressure there is kept constant, the pressure
wave bounces creating instabilities
Does any one know how to perform this simulation without creating pressure
beyonder is offline   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
CFD vs Test Pressure dulalerbap Main CFD Forum 2 November 28, 2012 13:25
Boundary layer over a flat plate using CFD hsnclk Main CFD Forum 2 May 13, 2011 01:52
Flow Over a Flat Plate recon9 CFX 1 January 20, 2011 22:09
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 16:00

All times are GMT -4. The time now is 00:38.