CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

How to configurate laval nozzle in wind tunnel??

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

LinkBack Thread Tools Display Modes
Old   January 19, 2011, 03:14
Default How to configurate laval nozzle in wind tunnel??
New Member
Join Date: Jan 2011
Posts: 5
Rep Power: 9
Robert2011 is on a distinguished road
I'm working on a project and I need some help, please. I need to perform and check is the laval nozzle which is designed for 2 Ma really keep that parameters in a supersonic wind tunel.
-And I need to check in a what range of pressure (in the inlet) the nozzle has the velocity of 2 Ma? How can I manage it?
The wind tunell is powered by compressed air in the tanks(650 m3) up to 18 atm. The nozzle size is: 300x300x1500mm. I've made the grid in Gambit. But my question is:
-What else apart from nozzle I need to design?
I' ve design the equalizing chamber at the the begining of the flow, then the nozzle, then the measurement chamber, and the tunnel (pipe lenght 12m). The whole task must be done in 2D.
-What kind of boundary conditions at inlet pressure and outlet pressure must be put? Is 18 atm (pressure) at the inlet and 1 atm at the outlet correct?
I make the task using k-epsilon model of turbulence. (ideal gas) The problem is with the mass flow rate! There is a huge loss of mass at the end of designed part od tunnel.
Please give me some advice. Maybe I need to design all tunnel not only part of it??
Thank you in advance.
Robert2011 is offline   Reply With Quote


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
laval nozzle in wind tunel configuration? Robert2011 Main CFD Forum 0 January 17, 2011 18:20
Laval Nozzle in tunnel configuration? Robert2011 FLUENT 0 January 17, 2011 17:47
how to consider perforated wind tunnel wall in CFD simulation littlelz CFX 4 June 11, 2009 05:51
Simulating a G├Âttingen type wind tunnel in FLUENT Chris FLUENT 3 December 4, 2006 18:33
Virtual Wind Tunnel in FLUENT ND FLUENT 0 April 7, 2006 07:43

All times are GMT -4. The time now is 05:59.