CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

What BCs to set in Fluent when I know only the static pressure at Inlet and outlet?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 29, 2015, 23:32
Default What BCs to set in Fluent when I know only the static pressure at Inlet and outlet?
  #1
Member
 
Nikesh Bhattarai
Join Date: Nov 2011
Location: Sacheon, South Korea
Posts: 82
Rep Power: 13
nikesh is an unknown quantity at this point
I'm trying to simulate flow through a regulator to check the position at which the outlet pressure is 1,000 psi. (Case similar to the Fig. attached). The inlet pressure (static) is 2,800 psi. I can measure experimentally the static pressure using a pressure gauge before and aft of the regulator. But I don't have any velocity information.

I'm trying to perform this in step-wise manner by varying the position of the poppet-valve. But I have problems with BC.

Fluent uses "Total pressure" while implementing "Pressure-inlet" BC and "Static pressure" for "Pressure-inlet". Since I don't know the total pressure at the inlet and also have no velocity information, what BC is better for my case and how can I proceed?
Attached Images
File Type: jpg regulator.jpg (19.1 KB, 7 views)
nikesh is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
2D Hypersonic Inlet in FLUENT - Convergence Issues Fraisdegout FLUENT 6 December 15, 2016 02:07
Unsteady pressure differential between inlet and outlet of the pipe for single phase joshi20h FLUENT 0 September 26, 2012 12:41
Pulsatile pressure inlet with pressure outlet a.lynchy FLUENT 3 March 23, 2012 13:45
Maintaining Static Pressure at Fluid Flow Inlet cdevalve FLUENT 3 January 14, 2012 00:11
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 05:13


All times are GMT -4. The time now is 01:20.