In many gas flows which do not involve extreme pressures or temperatures, compressibility is an important effect while viscosity and other real gas effects may be neglected away from any rigid boundaries. Almost all the theory contained in the following three chapters will be concerned with an inviscid ideal gas as defined in Chapter I. The only exception which we shall consider occurs in the study of shock waves, where viscosity is important in the interior of the shock. Some reference will also be made to other real gas effects, such as radiation and dissociation, which can be important under certain extreme conditions.
KeywordsMach Number Supersonic Flow Compressible Flow Shallow Water Theory Small Obstacle
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