Nozzle Analysis

May 30, 2005, 02:48

Dear Sir I am doing analysis of a convergent- divergent nozzle.

Inlet Dia 503 mm throat dia 134 mm exit dia 394 mm Ae/At = 8.6

Inlet pressure 45 bar Inlet temperature 3300 k outlet ambient

fluid is air, ideal gas. Coupled Implict solver

Isentropic one dimensional analysis shows the pressure at outlet should be around 0.5 bar. But from Fluent software I am geeting pressure at outlet is around 2 bar. May you please guide me that why I am getting greater values at outlet?

alikami · March 4, 2010, 12:28

give at outlet pressure outlet condition and use a low value say 0.2 bar

May 30, 2005, 02:48	Nozzle Analysis	#1
Akbar Guest Posts: n/a	Dear Sir I am doing analysis of a convergent- divergent nozzle. Inlet Dia 503 mm throat dia 134 mm exit dia 394 mm Ae/At = 8.6 Inlet pressure 45 bar Inlet temperature 3300 k outlet ambient fluid is air, ideal gas. Coupled Implict solver Isentropic one dimensional analysis shows the pressure at outlet should be around 0.5 bar. But from Fluent software I am geeting pressure at outlet is around 2 bar. May you please guide me that why I am getting greater values at outlet?

March 4, 2010, 12:28	nozzle	#2
alikami Member ali Join Date: May 2009 Posts: 58 Rep Power: 17	give at outlet pressure outlet condition and use a low value say 0.2 bar

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