CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   mass imbalance in wind tunnel problem (http://www.cfd-online.com/Forums/fluent/84275-mass-imbalance-wind-tunnel-problem.html)

Robert2011 January 25, 2011 07:46

mass imbalance in wind tunnel problem
 
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?


All times are GMT -4. The time now is 09:48.