|
Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2013, Volume 54, Issue 4, Pages 68–73
(Mi pmtf1158)
|
|
|
|
This article is cited in 20 scientific papers (total in 20 papers)
Experimental study of the effect of a passive porous coating on disturbances in a hypersonic boundary layer. 1. Effect of the porous coating length
S. V. Lukashevich, S. O. Morozov, A. N. Shiplyuk Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract:
The effect of passive porous coatings of different lengths on the second mode of disturbances in a hypersonic boundary layer is considered. The experiments are performed in a flow with a free-stream Mach number $\mathrm{M}=5.8$ and five values of the unit Reynolds number around a sharp cone with an apex half-angle equal to $7^{\circ}$, which is aligned at a zero angle of attack. One half of the model surface along its generatrix is covered by a porous material, and the other part is a solid surface. Pressure fluctuations on the model surface are measured. It is found that application of a passive porous coating can either decrease or increase the amplitude of the second mode. The length of the passive porous coating corresponding to the maximum efficiency of its action on flow disturbances and the coating length that increases the amplitude of the second mode are found.
Keywords:
experiment, hypersonic boundary layer, second mode of disturbances, passive porous coating.
Received: 25.01.2013
Citation:
S. V. Lukashevich, S. O. Morozov, A. N. Shiplyuk, “Experimental study of the effect of a passive porous coating on disturbances in a hypersonic boundary layer. 1. Effect of the porous coating length”, Prikl. Mekh. Tekh. Fiz., 54:4 (2013), 68–73; J. Appl. Mech. Tech. Phys., 54:4 (2013), 572–577
Linking options:
https://www.mathnet.ru/eng/pmtf1158 https://www.mathnet.ru/eng/pmtf/v54/i4/p68
|
|