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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 1999, Volume 40, Issue 6, Pages 69–72
(Mi pmtf3172)
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This article is cited in 1 scientific paper (total in 1 paper)
Effect of the plenum-chamber diameter on the turbulent characteristics of a supersonic jet
V. A. Maltsev, S. A. Novopashin, A. L. Perepelkin Kutateladze Institute of Thermal Physics, Siberian Division, Russian Academy of Sciences, Novosibirsk 630090
Abstract:
The effect of the flow character in the plenum chamber of a nozzle on the high-frequency boundary of the spectrum of fluctuations at the boundary of a supersonic, strongly underexpanded jet of nitrogen exhausted from a circular sonic nozzle into the ambient space was experimentally studied. The Reynolds number in the plenum chamber of the nozzle with a given throat area was varied by changing the diameter of the subsonic region. The high-frequency boundary of the spectrum of turbulent fluctuations was evaluated on the basis of two-point correlation functions of time. The technique for measurement of these functions was based on molecular scattering of light. Radiation of two pulse lasers with a controlled delay between the pulses was used as a source of light. It follows from experimental results that the high-frequency boundary of the spectrum of turbulent fluctuations and the spectrum itself vary significantly depending on the Reynolds number of the flow in the plenum chamber.
Received: 16.01.1998 Accepted: 17.07.1998
Citation:
V. A. Maltsev, S. A. Novopashin, A. L. Perepelkin, “Effect of the plenum-chamber diameter on the turbulent characteristics of a supersonic jet”, Prikl. Mekh. Tekh. Fiz., 40:6 (1999), 69–72; J. Appl. Mech. Tech. Phys., 40:6 (1999), 1057–1060
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https://www.mathnet.ru/eng/pmtf3172 https://www.mathnet.ru/eng/pmtf/v40/i6/p69
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