A plasma vortex generator-based inward-rotating inlet assembly and control method

Abstract

The invention discloses a plasma vortex generator-based inward-rotating air inlet component and a control method thereof. The assembly includes a machine body plane and an inward turning air inlet body, wherein one or more sets of arc spark discharge plasma vortex generators are arranged at a certain distance upstream along the compression surface below the machine body plane. This method uses the flow vortex formed by the interaction between the plasma jet and the free flow to promote the momentum exchange between the main flow and the low-energy flow in the boundary layer, enhance the ability of the boundary layer to resist the reverse pressure gradient, and reduce the shock wave / boundary layer induced by the downstream internal compression surface. The interference separation zone has a certain delay or inhibition effect, thereby effectively improving the performance of the intake port. Compared with the traditional method, the control method proposed by the present invention does not require additional air source, no flow loss, no additional resistance, and the control method is accurate and efficient, which has great advantages for the wide speed range and integrated design of the internal rotation air inlet. important promotion.

Description

technical field [0001] The invention belongs to the field of supersonic flow control, and in particular relates to an inwardly turning air inlet assembly and a control method for the air inlet assembly. Background technique [0002] With the continuous development of inlet aerodynamic technology, the three-dimensional inwardly turning inlet designed based on the streamline tracing method has gradually attracted the attention of researchers. The compression surface of the inwardly turning inlet is a typical three-dimensional curved surface. The generation of streamlines emanating from a given inlet profile of the inlet is traced in the reference axisymmetric inner cone flow field. Theoretically, the inward turning inlet designed according to streamline tracing can not only obtain high compression efficiency and flow field uniformity by maintaining the three-dimensional compression characteristics of the reference flow field, but also have the design freedom of the shape of th...

AI Technical Summary

Problems solved by technology

Each of these control methods has certain limitations. For the currently commonly used blowing and deflation control method, the air inlet based on this control method needs to arrange the blowing and deflation structure and the air flow channel, so the configuration is generally more complicated, and the blowing There are certain requirements on the air source during control, and part of the high-quality flow will inevitably be lost during deflation control; for the vortex generator control method, there are certain difficulties in the design and production of the body equipped with the vortex generator; and variable geometry The control method has higher requirements for the design method and processing technology of the intake port

Images