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

Erroneous Rapid condensation (bubble collapse) in flow over a hydrofoil

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 4, 2016, 19:40
Default Erroneous Rapid condensation (bubble collapse) in flow over a hydrofoil
  #1
New Member
 
Aseem Desai
Join Date: Aug 2016
Posts: 1
Rep Power: 0
aseemd is on a distinguished road
The inlet and exit pressure is of the order 24,000 pascal. The pressure over the blade surface (NACA 66) drops to 1500 pascal which is well below the vapour pressure. However, since the inlet pressure is greater than the vapour pressure, both cavitation models in Fluent (Gerber and schner) predict rapid bubble collapse . The vapour fraction drops to zero very quickly after the inlet and does not rise near the blade surface.
In reality the non-condensable gas prevents collapse of the bubble and infact the bubble enters the domian at equillibrium.

Is there a way to avoid this erroneous prediction of rapid bubble collapse near the inlet ?

Any help would be appreciated
aseemd 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
steam condensation bubbly flow Dragonuser CFX 2 November 25, 2014 05:09
Can I simulate bubble collapse? highm3358 STAR-CCM+ 0 January 4, 2013 03:33
fluid flow fundas ram Main CFD Forum 5 June 17, 2000 22:31
Help on bubble flow experiment dataset X.-L. Chan Main CFD Forum 3 October 29, 1999 00:24
Flow visualization vs. Calculated flow patterns Francisco Saldarriaga Main CFD Forum 1 August 3, 1999 00:18


All times are GMT -4. The time now is 18:40.