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What is stagnation velocity of sound?

Updated: 10/31/2022
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11y ago

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It is the speed of sound in a fluid at stagnation conditions. For example, if you have air flowing at some speed V with a temperature T and pressure P, the speed of sound in the air at those conditions will be = sqrt(kRT). k is the ratio of specific heats (approx. 1.4), R is the ideal gas constant for air (approx. 0.2870 kJ/kg/K). If that moving air hits an object and stagnates, the pressure, temperature, and density of the will increase to the stagnation conditions by an amount proportional to the air's initial velocity. The stagnation speed of sound will be the speed of the sound at those stagnation conditions (most importantly the speed of sound at the stagnation temperature).

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11y ago
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Q: What is stagnation velocity of sound?
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