Concept explainers
Find the average density of the gas exiting the engine.
Answer to Problem 45P
The average density of the gas exiting the engine in
Explanation of Solution
Given data:
Consider that the inlet area of the engine as
Consider that the outlet area of the engine as
Formula used:
Consider the following expression.
In this problem, the fuel mass flow rate is neglected since it is negligible value when compared air mass flow rate.
Consider that the mass flow rate of air enters is equal to the mass flow rate of exists.
Write the expression for the mass flow rate.
Calculation:
Convert the unit of the value in equation (1) from
Convert the unit of the value in equation (2) from
Substitute equation (4) in (3),
Substitute
Convert the unit of the value in equation (5) from
Convert the unit of the value in equation (5) from
Conclusion:
Thus, the average density of the gas exiting the engine in
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