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Zero mass jet flow based array variable parameter jet flow control method

A flow control and zero-mass technology, applied in the direction of flow control, non-electric variable control, flow control using electric devices, etc., to achieve the effects of reducing the adverse effects of the flow field, reducing the weight of the system, and simplifying the complexity of the system

Active Publication Date: 2017-06-20
CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA
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Problems solved by technology

[0014] At present, the frontier research at home and abroad is still in the stage of application exploration

Method used

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  • Zero mass jet flow based array variable parameter jet flow control method
  • Zero mass jet flow based array variable parameter jet flow control method
  • Zero mass jet flow based array variable parameter jet flow control method

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specific Embodiment approach

[0035] The specific embodiment of the present invention comprises the following steps:

[0036] The first step is to collect the angle of attack α and angle of sideslip β of the flow field of the controlled object, and substitute the angle of attack α and angle of sideslip β into the DOE-based surrogate model obtained through the theory of experimental design through array calculation, and obtain the required The nozzle arrangement matrix of the job [K];

[0037] The second step is to collect the incoming flow velocity V of the flow field of the controlled object ∞ and fluid density ρ ∞ , calculated by zero mass jet excitation frequency, the future flow velocity V ∞ and fluid density ρ ∞ Substituting the DOE-based surrogate model obtained through the experimental design theory, so as to obtain a reference excitation frequency f 0 ;

[0038] In the third step, the nozzle arrangement matrix [K] obtained in the first and second steps, the angle of attack α, the sideslip angl...

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Abstract

The invention belongs to the technical field of flow control in hydromechanics and specifically relates to a method for arraying a zero mass jet flow exciter and performing active flow control on a shear layer and a large separation flow field. According to the invention, through arraying of the zero mass jet flow exciter, an array jet flow zone is formed. Through control of jet flow exciting frequency, jet flow exciting time sequence and jet flow integral geometric features, the shear layer and the large separation flow field (such as cavity flow) are improved. Besides, jet flow parameters can be adjusted flexibly based on a wide flow incoming speed range (incompressible flow, compressible flow) and varying flow incoming angles. Therefore, an aim of flow control is achieved.

Description

technical field [0001] The invention relates to the field of flow control, in particular to a method for active flow control after arraying zero-mass jet actuators and opening an internal bomb bay. Background technique [0002] Zero-mass jet technology can be traced back to the acoustic rectification effect, that is, the study of how sound produces flow, which is produced by a periodic boundary layer in a static environment. In a narrow space with limited outlets, such as pipes or cavities, the directional flow leads to an acoustic rectification effect, and the resulting flow injects a certain momentum into the environment with zero mass flux. Due to the synthetic characteristics of the jet, it is It is called synthetic jet or self-coupled jet. The internal mechanism of synthetic jet formation lies in the vortex ring formed at the edge of the hole / slit and the migration motion downstream under the action of self-induced velocity after the vortex ring is formed. [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D7/06
CPCG05D7/0629
Inventor 郭亮
Owner CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA
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