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

full simulation of an aircraft with propeller effect

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 17, 2010, 10:25
Question full simulation of an aircraft with propeller effect
  #1
Member
 
kdrbrk's Avatar
 
Burak
Join Date: May 2009
Posts: 90
Rep Power: 8
kdrbrk is on a distinguished road
Hi all,

I searched the forum but no clear answers.

In order to simulate an aircraft with a propeller at the front (let's say it is a cessna 172):

In gambit:
(1)Can I simulate the propeller by a circular zero-thickness surface?
(2)If yes, should I split the volume with that surface?
(3)Which boundary condition must be given to that surface?

In fluent:
(4)With that boundary condition given in gambit, during steady state analysis, will it suck the air in front of the propeller and give it back with much more velocity/pressure?
(5)Can I give the rotating effect of air after the propeller?

Thanks in advance.

Burak
kdrbrk is offline   Reply With Quote

Old   June 17, 2010, 10:47
Default
  #2
New Member
 
Kamil Sobczak
Join Date: Jan 2010
Location: Warsaw, Poland
Posts: 6
Rep Power: 7
KamilSobczak is on a distinguished road
In gambit:
(1)Can I simulate the propeller by a circular zero-thickness surface?
- Yes you can.
(2)If yes, should I split the volume with that surface?
- This is correct operation.
(3)Which boundary condition must be given to that surface?
- Fan will be good.

In fluent:
(4)With that boundary condition given in gambit, during steady state analysis, will it suck the air in front of the propeller and give it back with much more velocity/pressure?
- In b.c. panel you can input value of constant pressure jump - Force generated by propeller divided by area of propeller surface.
(5)Can I give the rotating effect of air after the propeller?
- Default option in fan b.c. panel allows some swirl velocity but I don't understand how this works. So I input udf function to simulate rotating velocity.
But if your model is a simplification of propeller by surface I'm not seeing a point to include rotating effect in a simulation.
KamilSobczak is offline   Reply With Quote

Old   June 18, 2010, 01:29
Default
  #3
Member
 
kdrbrk's Avatar
 
Burak
Join Date: May 2009
Posts: 90
Rep Power: 8
kdrbrk is on a distinguished road
Hi Kamil,

Thanks for your reply.
I will try it as soon as possible.

By swirling effect, I just wondered if I can see the swirling air hitting to the vertical stabilizer. This was just for fun
kdrbrk 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
a propeller 2 way fsi kantored CFX 9 April 11, 2007 14:51
simulate a tank equipped with propeller inside aloha5i CFX 0 October 15, 2005 15:56
Propeller thrust at diff. advance ratio (CFX 5.7) Zoltan CFX 9 April 27, 2005 08:23
Fire simulation using FDS from NIST Jens Main CFD Forum 1 January 22, 2004 02:53
3-D Contaminant Dispersal Simulation Apple L S Chan Main CFD Forum 1 December 23, 1998 11:06


All times are GMT -4. The time now is 03:47.