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How does Mach number affect the flow of compressible fluids? 


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The Mach number has a significant impact on the flow of compressible fluids. At subsonic and transonic Mach numbers, the flow characteristics around different geometries, such as a wavy-axis cylinder or a backward-facing step , are influenced by the interaction between high- and low-momentum streams, vortex shedding, and shock wave formation. In the supersonic regime, the flow behavior changes, with a clear separation between the outer flow and the flow close to the surface . Additionally, rarefied flow in the transition regime exhibits variations in velocity, pressure, and temperature due to compressibility and shear effects . The low Mach number limit for rotating compressible fluids is also affected by the interaction of centrifugal force with acoustic waves . Overall, the Mach number plays a crucial role in determining the flow properties and behavior of compressible fluids.

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The paper examines the low Mach number performance of the MacCormack scheme and proposes modifications to improve accuracy.
The paper discusses the low Mach number limit for compressible rotating fluids, but does not provide specific information on how the Mach number affects the flow.
The Mach number affects the flow of compressible fluids by influencing the reattachment location and dynamic loads on the surface.
The research found that Mach number affects the flow properties of compressible fluids, such as velocity, pressure, and temperature.
The Mach number affects the flow characteristics and drag reduction of compressible fluids around a wavy-axis cylinder.

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