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On the basically single-type excitation source of resonance in the wind tunnel and in the hydroturbine channel of a hydraulic power plant

  • Hydrogasdynamics in Technological Processes
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Journal of Engineering Physics and Thermophysics Aims and scope

We have investigated the spectra of pressure pulsations in the near field of the open working section of the wind tunnel with a vortex flow behind the tunnel blower formed like the flow behind the hydroturbine of a hydraulic power plant. We have made a comparison between the measurement data for pressure pulsations and the air stream velocity in tunnels of the above type and in tunnels in which a large-scale vortex structure behind the blower is not formed. It has been established that the large-scale vortex formation in the incompressible medium behind the blade system in the wind tunnel is a source of narrow-band acoustic radiation capable of exciting resonance self-oscillations in the tunnel channel.

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Authors and Affiliations

  1. Prof. N. E. Zhukovskii Central Aerohydrodynamic Institute, 1 Zhukovskii, Moscow Region, 140180, Russia

    R. K. Karavosov & A. G. Prozorov

Authors
  1. R. K. Karavosov
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  2. A. G. Prozorov
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Correspondence to A. G. Prozorov.

Additional information

Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 85, No. 1, pp. 79–83, January–February, 2012.

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Karavosov, R.K., Prozorov, A.G. On the basically single-type excitation source of resonance in the wind tunnel and in the hydroturbine channel of a hydraulic power plant. J Eng Phys Thermophy 85, 87–91 (2012). https://doi.org/10.1007/s10891-012-0624-y

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  • DOI: https://doi.org/10.1007/s10891-012-0624-y

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