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- W1970996836 abstract "The wavenumber for the fundamental mode in a uniform duct with arbitrary cross section of area A is shown to be k = ±(w2A∫dAc2)12 − wA∫Vc2 dA, when the frequency w/2p is well below cutoff. This is valid for an arbitrary transverse variation in the temperature and hence in the local sound speed c, up to first order in c1/c0, where c = c0 + c1 and c0 = const. It is also valid for an arbitrary transverse variation in the mean longitudinal velocity V, up to first order in V/c. For an ideal gas, c2 = yP/p, where y is a constant, P is the pressure (assumed constant) and p is the density (which varies with temperature). Hence the first term contains only the average density, and the second only the average mass flow rate. Correction terms will be presented." @default.
- W1970996836 created "2016-06-24" @default.
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- W1970996836 date "1976-04-01" @default.
- W1970996836 modified "2023-09-24" @default.
- W1970996836 title "Expression for the effect of arbitrary temperature and mean flow profiles on the speed of sound in a duct" @default.
- W1970996836 doi "https://doi.org/10.1121/1.2002889" @default.
- W1970996836 hasPublicationYear "1976" @default.
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