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Fluid Mechanics: Energy Equation For Compressible Gas

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Assume that the energy equation for a compressible gas can be written as:... Explain the meaning and units of the terms H,V,z,Q and W in this equation.
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The energy equations for compressible gas are examined for fluid mechanics.

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Please see the attached file

(a) H = Pressure/ density (m2/s2)
V = speed of flow (m/s)
z = height from the datum (m)
Q = the heat added per unit time to the stream tube by conduction divided by the mass flow rate through the tube, (m2/s2)
W = the viscous working rate on the environment of the tube divided by the ...

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