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Gas-dynamic heating in cavities under the influence of pressure pulsations at the entrance

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An investigation has been made of the gas-dynamic heating of gas in nearly closed cavities (tubes, channels, etc.) under the influence of given pressure pulsations (with and without a discrete component) at the entrance. The results are given of measurements of the wall temperature of the cavities and also the power of the gas-dynamic heating as a function of the relative cavity length 10< ln/dn < 300, the relative level of the pressure pulsations σ0/p < 0.5 at the entrance, and the magnitude of the static pressure in the range p = 2–10 kg/cm2. It was established that with increasing p and especially σ0/p the power of the gas-dynamic heating increases strongly.

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Translated fron Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 6, pp. 177–179, November–December, 1983.

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Gryaznov, V.P., Kuptsov, V.M. Gas-dynamic heating in cavities under the influence of pressure pulsations at the entrance. Fluid Dyn 18, 987–989 (1983). https://doi.org/10.1007/BF01090761

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  • Static Pressure
  • Pressure Pulsation
  • Wall Temperature
  • Relative Level
  • Cavity Length