Underwater glider open-loop active flow control device based on synthetic jet

Abstract

The invention discloses an underwater glider open-loop active flow control device based on synthetic jet, and relates to the field of active flow control. The device comprises a mechanical double-cavity vibration type synthetic jet exciter arranged at the front end in a wing of an underwater glider; the mechanical double-cavity vibration type synthetic jet exciter is electrically connected with acontrol unit, and the control unit is fixedly arranged in the underwater glider; and a plurality of jet nozzles are formed in the front end of the upper surface of the underwater glider wing, and themechanical double-cavity vibration type synthetic jet exciter is located at the positions of the jet nozzles. According to the underwater glider open-loop active flow control device based on the synthetic jet, local or global effective flow changes are obtained through local disturbance, and then the purposes of increasing lift, reducing resistance, improving a flow field, restraining noise and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of active flow control, in particular to an open-loop active flow control device for an underwater glider based on a synthetic jet. Background technique [0002] Underwater Glider (UG) is a new type of underwater vehicle that uses net buoyancy and attitude angle adjustment to obtain propulsion. Compared with traditional underwater vehicles, underwater glider has the advantages of long range, strong continuous working ability and good economy. As an underwater unmanned intelligent mobile platform, underwater glider has broad application prospects and great potential value in the fields of exploring marine resources, marine scientific investigation and military affairs. According to the appearance, underwater gliders can be divided into two types: traditional rotary type and wing-body fusion type. Since the shape of the rotor shell cannot provide very high lift like hydrofoils, the maximum lift-to-drag ratio...

AI Technical Summary

Problems solved by technology

At present, the lift-to-drag ratio of wing-body fused underwater gliders can reach 15-20 through shape optimization. Further improvement of the lift-to-drag ratio

Moreover, only relying on shape optimization to increase the lift-to-drag ratio of an underwater glider will narrow the internal space of the glider, reducing its detection capability or working time.

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