![]() For small flow changes, the wave sets itself up at the Mach angle ( µ) appropriate to the upstream flow conditions.įor finite-positive or compressive-flow deflections-that is, when the downstream pressure is much greater than that upstream-the (shock) wave angle is greater than the Mach angle, causing characteristic changes in the flow (see Section 6.4). Also, their only change is in the direction normal to the front, which is known as a wave. ![]() Valentine, in Aerodynamics for Engineering Students (Sixth Edition), 2013 6.5 Mach Waves and Shock Waves in Two-Dimensional FlowĪ small deflection in supersonic flow always takes place such that the flow properties are uniform along a front inclined to the flow direction.
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