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What is the differential form of energy equation for quasi one – dimensional flow?(a) dh – u^2du = 0(b) dh – udu = 0(c) dh + u^2du = 0(d) dh + udu = 0I got this question in an interview.I need to ask this question from Governing Equations topic in chapter Quasi-One-Dimensional Flow of Aerodynamics

Answer»

The CORRECT option is (d) dh + udu = 0

Best explanation: The energy equation for quasi ONE – dimensional flow is given by:

H + \(\frac {u^2}{2}\) = constant

On differentiating the above equation we arrive at the DIFFERENTIAL energy equation for the quasi one – dimensional flow:

dh + udu = 0



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