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The Trends

The trends or whether the variables are increasing or decreasing can be observed from looking at the equation developed. For example, the pressure can be examined by looking at equation (9.26). It demonstrates that the Mach number increases downstream when the flow is subsonic. On the other hand, when the flow is supersonic, the pressure decreases.

The summary of the properties changes on the sides of the branch

Subsonic Supersonic
Pressure, $ P$ decrease increase
Mach number, $ M$ increase decrease
Velocity, $ U$ increase decrease
Temperature, $ T$ decrease increase
Density, $ \rho $ decrease increase
Stagnation Temperature, $ T_0$ decrease increase
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next up previous index
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Created by:Genick Bar-Meir, Ph.D.
On: 2007-11-21