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

Flow Over a Flat Plate

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 20, 2011, 13:01
Default Flow Over a Flat Plate
  #1
New Member
 
Brady
Join Date: Jan 2011
Location: Calgary, Alberta, Canada
Posts: 12
Rep Power: 5
recon9 is on a distinguished road
Hello,

I am fairly new to CFD and CFX. I am attempting to model an inclined (high angle) flat plate with a flow over it. The goal is to calculate the force and moments generated by the flow. A variable I will be adjusting is the height of the plate from a solid surface. I am starting with a 2D analysis. I would like to get some opinions on whether my approach and set-up is reasonable.

I have created the geometry, my control volume is 0.1m thick. Currently for meshing I have a minimum edge length as 0.1m to force CFX to do 2D. I used CFX-Meshing Method.

I have an inlet set to normal velocity. I have an outlet opposite to the inlet set to 0 relative pressure. The sides are symmetry planes. The top is an opening with opening press and dirn. The bottom is a smooth wall with no slip. The plate itself is a smooth wall with no slip. I am using medium 5% turbulence. Do these boundaries sound reasonable?

Should I be using inflated boundaries along the bottom surface? How about along the surface of the plate?

Is there a rule of thumb for the size of my control volume?

I am then using a polyline to plot the pressure along the front and back surfaces of the plate.

Finally, if anyone knows of any good resources for flat plate aerodynamics(calculating Cd, Cl, Cp, etc) that would be great.

Thank you for your advice.
recon9 is offline   Reply With Quote

Old   January 20, 2011, 21:09
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 9,380
Rep Power: 74
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Quote:
Is there a rule of thumb for the size of my control volume?
No. Have a guess, then halve it and do a sensitivity check. Keep refining until you get the desired accuracy.

Quote:
Do these boundaries sound reasonable?
If that matches your intended case then yes, they sound reasonable.
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
Supersonic flow over flat plate Nikhil Main CFD Forum 6 May 20, 2013 12:48
incompressible, 2-D laminar flow over flat plate... varunjain89 Main CFD Forum 3 March 6, 2012 11:13
Flow over flat plate using FASTRAN AndyLiu Main CFD Forum 1 August 7, 2006 08:02
Conjugate heat transfer for film-cooled flat plate Michele FLUENT 0 July 3, 2006 08:42
results for flow past flat plate normal to flow lisa Main CFD Forum 2 August 30, 2005 16:36


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