# Linear & quadratic resistance coefficient - Fishing net as membrane/porous media

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

 November 13, 2017, 10:14 #2 Senior Member     Mr CFD Join Date: Jun 2012 Location: Britain Posts: 339 Rep Power: 8 Hi Burken, Interesting project! The obvious question to ask is the pressure difference or the coefficients available in the literature? Has someone already done the experiment or CFD and published the data? Could you get the answer by simplifying? E.g. 1. Simulate a very small pipe with the net in the middle (physically draw the net, include it in your geometry, and grid it up and run the CFD) 2. Set the Re number in the pipe to be the same order of magnitude as the Re in the channel 3. Get the pressure loss or coefficients across the net 4. Use the results from point 3 to do a full channel simulation with the net as the porous media

November 14, 2017, 07:12
#3
New Member

Johan Björk
Join Date: Nov 2017
Posts: 2
Rep Power: 0
Quote:
 Originally Posted by JuPa Hi Burken, Interesting project! The obvious question to ask is the pressure difference or the coefficients available in the literature? Has someone already done the experiment or CFD and published the data? Could you get the answer by simplifying? E.g. 1. Simulate a very small pipe with the net in the middle (physically draw the net, include it in your geometry, and grid it up and run the CFD) 2. Set the Re number in the pipe to be the same order of magnitude as the Re in the channel 3. Get the pressure loss or coefficients across the net 4. Use the results from point 3 to do a full channel simulation with the net as the porous media
Thank you for your input JuPa!

We are trying to design a net now instead to simulate our problem. We decided that it would be easier to just ignore the idea of using membrane and just go with a drawn net instead.

 Tags cfx, coefficients., membrane, permeability, resistance

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Ramana CFX 4 November 26, 2012 17:25 giogio FLUENT 3 June 21, 2011 18:09 AL FLUENT 0 December 15, 2008 15:52 Ramana CFX 0 January 2, 2006 04:43 Desheng Kong Main CFD Forum 3 December 19, 2000 12:07

All times are GMT -4. The time now is 08:14.