Study of the Possibilities of Gasdynamic Air Flow Control in the Spatial Air Intake of a Light Supersonic Business-Class Aircraft by the RANS/ILES Method

Abstract

The effect of the boundary-layer bleed system on the flow and characteristics of the spatial air intake of a supersonic business-class aircraft integrated with an airframe simulator was studied by the combined high-resolution Reynolds Averaged Navier–Stokes Implicit Large Eddy Simulation method (RANS/ILES ). Two variants of geometry with and without the boundary-layer bleed system were considered. The effect of gasdynamic flow control with the use of synthetic jets was studied for both air intake variants. The effect produced by the boundary-layer bleed system and the regime parameters of synthetic jets on the flow in the air intake and its characteristics, the level of turbulent fluctuations, and the surge boundary was studied. The level of velocity and pressure fluctuations was established to be lower at the outlet of the air intake without the boundary-layer bleed system. The application of synthetic jets made it possible to reduce the total pressure losses and level of turbulent fluctuations in the channel of the air intake and at its outlet, thus increasing the range of its stable operation.