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ISSN Druckformat: 1948-2590
ISSN Online: 1948-2604
EFFECT OF INJECTION FROM THE A WEDGE SURFACE ON THE PROPAGATION OF DISTURBANCES IN A HYPERSONIC FLOW
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ABSTRAKT
The effect of the flow in a three-dimensional laminar boundary layer on the permeable plane surface of a wedge with normal injection of gas through the wedge surface is considered in the region of a strong viscous-inviscid interaction with the hypersonic flow. To study the possibility of upstream propagation of disturbances, the flow functions in the vicinity of the leading edge of the wedge are expanded into a series under the assumption that the base pressure is set at the trailing edge as a function of the spanwise coordinate. It is demonstrated that the coefficients of these expansions include an uncertain function, which depends on the value of this coordinate. Corresponding boundary-value problems are formulated and solved numerically, and eigenvalues are determined. The possibility of upstream propagation of disturbances is found to be significantly enhanced with an increase in the intensity of the gas injection. The influence of the injection velocity on the flow character is considered.
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