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ISSN Печать: 1948-2590
ISSN Онлайн: 1948-2604
WALL PRESSURE FLUCTUATIONS OF GRADIENT BOUNDARY LAYER
Краткое описание
Experimental investigations of the wall pressure fluctuation field of the turbulent boundary layer over a wide range of variations of the mean pressure dimensionless gradient (−70 ≤ dp/dx ≤ 50), which covers this range on the fuselage surface in the zone of the passenger cabin and cockpit, are carried out. It is shown that the gradient turbulent boundary layer local aerodynamical parameters in the gradient flow region should be used in determining its wall pressure fluctuation field characteristics. In this case, the effects of the mean pressure gradient in the range of its dimensionless value (− 70 ≤ dp/dx ≤ 10) variation can be neglected. The calculation model for evaluating the characteristics of the wall turbulent pressure fluctuation field is proposed for the range of the mean pressure gradients of 10 ≤ dp/dx ≤ 50, when the pressure gradient effects cannot be ignored.