Design the nozzle of a fuel injector, which has to expand 2.5 g/s of methane (R = 518 J/kgK; k=1.31) from p,-9 bar, T,= 300 K, c,~0, down to the pressure p,-3.5 bar. Also, evaluate the flow outlet velocity under design conditions. In off-design operations, the pressure upstream of the nozzle is reduced to p,'=3.9 bar, by keeping the same inlet temperature. The downstream pressure remains constant. Determine, under off-design conditions: The mass-flow rate expanded by the nozzle3B The flow outlet velocity, The produs fou denei

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Design the nozzle of a fuel injector, which has to expand 2.5 g/s of methane (R = 518 J/kgK; k=1.31)
from p,-9 bar, T,= 300 K, c,~0, down to the pressure p,=3.5 bar. Also, evaluate the flow outlet
velocity under design conditions.
In off-design operations, the pressure upstream of the nozzle is reduced to p,'=3.9 bar, by keeping
the same inlet temperature. The downstream pressure remains constant.
Determine, under off-design conditions:
The mass-flow rate expanded by the nozzle,
The flow outlet velocity,
The product between flow density and velocity in the throat section.
Transcribed Image Text:Design the nozzle of a fuel injector, which has to expand 2.5 g/s of methane (R = 518 J/kgK; k=1.31) from p,-9 bar, T,= 300 K, c,~0, down to the pressure p,=3.5 bar. Also, evaluate the flow outlet velocity under design conditions. In off-design operations, the pressure upstream of the nozzle is reduced to p,'=3.9 bar, by keeping the same inlet temperature. The downstream pressure remains constant. Determine, under off-design conditions: The mass-flow rate expanded by the nozzle, The flow outlet velocity, The product between flow density and velocity in the throat section.
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