mass imbalance in wind tunnel problem -- CFD Online Discussion Forums

January 25, 2011, 07:46	mass imbalance in wind tunnel problem	#1
Robert2011 New Member Join Date: Jan 2011 Posts: 5 Rep Power: 15	Hi. I'm trying to solve a problem of mass imbalance in wint tunnel. I'm solving a laval nozzle in a wind tunnel. I've done the model in GAMBIT, the inlet, compensatory chamber, the nozzle, the measurement chamber and the part o a tunel. The problem, I'm trying to solve should be done in 2D, its supersonic flow. Size of the nozzle is 1,1 m length, the model of the tunnel I've made has 12 m long. The pressure on the inlet is 18 atm. On the outlet should be 1 atm. Why there is a huge imbalance in mass flow? Anyone could help?

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 Off Pingbacks are On Refbacks are On Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
mass flow in is not equal to mass flow out	saii	CFX	12	March 19, 2018 06:21
HELP! rail tunnel pressure problem	miguel.berrozpe	Main CFD Forum	1	February 14, 2012 09:35
convergence problem when use pisoFoam, LES for wind tunnel case	Forrest_Lei	OpenFOAM	3	July 19, 2011 07:00
CFD in wind tunnel	Anders Hagberg	Main CFD Forum	9	June 1, 2004 18:42
OutletBoundary Condition Causes Mass Imbalance	Andy	Main CFD Forum	0	March 11, 2004 15:05

All times are GMT -4. The time now is 12:08.