Synthetic jet driver based on dielectric elastomer driving and manufacturing method thereof

Abstract

The invention discloses a synthetic jet driver based on dielectric elastomer driving. The driver includes a front cavity, an elastic component, a dielectric elastomer film, an intermedium ring and a rear cavity. The front cavity and the rear cavity are hollow shells with one end open and the other end closed, and the intermedium ring is a hollow shell with the two ends open; the closed end of therear cavity is provided with a through hole, the open end of the rear cavity is closely connected with the first open end of the intermedium ring, and the second open end of the intermedium ring is connected with the open end of the front cavity. The second open end of the intermedium ring is provided with a dielectric elastomer film, a first inner cavity is formed between dielectric elastomer film and the front cavity, and a second cavity is formed between the dielectric elastomer film, the intermedium ring and the rear cavity; the elastic component is arranged between the front cavity and the dielectric elastomer film. The synthetic jet driver has very simple overall structure and motion control, very high jet speed and ultra low weight, and has great potential application value in the fields of fluid active control, aerospace exploration engineering and the like.

Description

technical field [0001] The invention belongs to the technical field of active flow control, and in particular relates to a synthetic jet driver and a manufacturing method thereof. Background technique [0002] Flow control technology is one of the frontier topics in the current research field of fluid mechanics, and its research results can be widely used in aerospace and navigation research fields. Flow control is divided into two categories: passive control and active control. Passive flow control is characterized by no need for external energy input, easy to use, and reliable performance, but the effective range of action is limited. When the deviation is large, the control effect may deteriorate sharply. The active flow control technology injects energy and disturbance into the flow, and under different working conditions, the disturbance interacts with the flow in the system to achieve the purpose of adaptive regulation and control. [0003] A synthetic jet is a non-c...

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Problems solved by technology

[0004] The object of the present invention is to provide a synthetic jet driver driven by a dielectric elastomer and its manufacturing method, which utilizes the design of the out-of-plane vibration mechanism of the dielectric elastomer material under dynamic voltage loading to solve the problem of existing synthetic jet drivers. Disadvantages of low synthetic jet velocity caused by too small output displacement of the vibration part

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