CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

FSI including flow induced vibrations in porous models

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 23, 2013, 12:03
Default FSI including flow induced vibrations in porous models
  #1
Senior Member
 
OJ
Join Date: Apr 2012
Location: United Kindom
Posts: 475
Rep Power: 11
oj.bulmer will become famous soon enough
Hi

I was wondering if anyone here has any experience of modelling flow induced vibrations and the corresponding FSI in filtration equipments in the pipelines. Few of the contributing factors that I see can be:

1) Flow pulsation due to compressor in the vicinity in the pipeline
2) Vortex shedding at strainer pores (perforated sheets)
3) Acoustic characteristics due to incoming flow and the inherent design of the equipment
4) Transient phenomena because of the intricate cavities/recirculation etc in the equipment.

While incorporating the relevant contributing factors from the ones listed above will be difficult enough as it is, the situation will be more convoluted when there are porous interfaces/regions in the equipment.

Thanks
OJ
oj.bulmer is offline   Reply With Quote

Old   October 9, 2013, 07:33
Default
  #2
Senior Member
 
OJ
Join Date: Apr 2012
Location: United Kindom
Posts: 475
Rep Power: 11
oj.bulmer will become famous soon enough
On the same topic, I have found an interesting paper:

Y Khulief, M. A. Habib, S. A. M. Said, R Ben-Mansour, H. M. Badr, M Anis, and A.E. Khalifa, Vortex shedding-free strainers, Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, Volume 226, Number 2, 2012, Pages 91-104.

But I wonder if anyone has any experience of similar simulations. I was wondering, if all these 4 cases are isolated and if the results are obtained separately to find the peaking frequency in each case would give me anything...

Also, given that strainer will be represented as a porous zone/interface, it will practically smear off the perturbations. In this case, would it be reasonable to trust the transient instabilities obtained by FSI on a full model, with contributions from #1, #3 and #4 taken into account?

Any thoughts around this will give me something...

Thanks!
OJ
oj.bulmer is offline   Reply With Quote

Old   October 9, 2013, 17:38
Default
  #3
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,824
Rep Power: 85
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
I agree with you - I cannot see how modelling the strainer as a porous region can predict the vibration frequencies accurately (your effect #2). You probably can model the other effects you mention but #2 sounds difficult without a detailed model of the strainer.
ghorrocks is offline   Reply With Quote

Reply

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
compressible flow through porous media Chirag2302 FLUENT 0 March 3, 2012 00:13
Flow meter Design CD adapco Group Marketing CD-adapco 3 June 21, 2011 08:33
Simulation of air flow inside valve - FSI? Help! farianka Main CFD Forum 0 April 17, 2011 16:30
Multiphase Porous Media Flow - Convergence Issues VT_Bromley FLUENT 5 March 23, 2011 11:38
Question for modelling flow in porous media legendyxg FLUENT 9 April 21, 2009 22:24


All times are GMT -4. The time now is 16:27.