Turbulence generating device capable of controlling turbulence intensity

A technology of turbulent flow and shunt cavity, which is applied in the field of constant volume incendiary bomb turbulence generating device, can solve the problems of sealing problem, difficult processing, complicated device structure, etc., and achieves the effects of small vibration, easy manufacture and control, and high structural strength.

Inactive Publication Date: 2019-04-05
BEIJING JIAOTONG UNIV
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Problems solved by technology

However, the structure of this fan-type turbulent flow generating device is relatively complicated, and the processing is difficult, and there is a rotary motion between the connecting shaft between the motor and the fan and the constant volume incendiary bomb, and there is a sealing problem

Method used

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  • Turbulence generating device capable of controlling turbulence intensity
  • Turbulence generating device capable of controlling turbulence intensity
  • Turbulence generating device capable of controlling turbulence intensity

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Embodiment Construction

[0016] The present invention provides a turbulent flow generating device used in constant volume incendiary bomb equipment. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] First, refer to figure 1 , the engine combustion process experimental testing device of the present invention is specifically described. The device consists of a single-cylinder engine (1), a coupling (2), a gas pipeline (3), a split chamber (4), a constant volume incendiary bomb (5), a double output shaft motor (6) and a digital frequency regulator (7). Composition; a single-cylinder engine (1) is respectively arranged on both sides of the double-output shaft motor (6); the split cavity (4) and the gas pipeline (3) are respectively installed on the single-cylinder engine (1) on both sides, and the gas pipeline (3 ) is connected with the constant-volume incendiary bomb (5); between each split chamber (4) and the constant-...

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Abstract

The invention provides a turbulence generating device capable of adjusting the turbulence intensity. The device is applied to constant volume combustion bomb test equipment. The device is composed ofsingle-cylinder engines (1), flexible couplings (2), gas pipelines (3), flow distribution cavities (4), a constant volume combustion bomb (5), a double-output shaft motor (6) and a digital frequency modulator. The motor drives pistons of the single-cylinder engines to move in a reciprocating mode, and jet flow is generated through the gas pipelines to generate a collision in the center of the constant volume combustion bomb, so that an isotropic turbulence environment is formed in the center; and the rotating speed of the double-output shaft motor is controlled by adjusting the digital frequency modulator so as to control the turbulence intensity. Compared with a traditional turbulence generating device, the device can generate controllable and isotropic stable turbulence; the double-output shaft motor can enable the two single-cylinder engines to synchronously and stably move through the flexible couplings, so that the overall structure is compact; and the flow distribution cavities ensure that the speed and the flow are same when the gas flow in the reciprocating motion process of the pistons passes through connected gas holes of the constant volume combustion bomb, so that the accuracy of a simulation experiment is further improved.

Description

technical field [0001] The invention relates to a turbulent flow generating device for a constant-volume incendiary bomb. Background technique [0002] Turbulent combustion is currently a hot and difficult issue in the study of fuel combustion characteristics. The ability to form a better isotropic turbulent field in a constant volume incendiary bomb is the basis for studying turbulent combustion. The existing turbulent flow generation device in a constant volume incendiary bomb The controllability of the turbulence intensity generated in the medium is poor, and the uniformity of the turbulence is poor. [0003] Therefore, it is necessary to provide a turbulence generating device for constant volume incendiary bombs. [0004] Chinese patent application CN106370771A discloses a visual constant-volume combustion test device and method for realizing turbulent flame and shock wave, wherein the turbulent flow generator installs orifice plates with different apertures and porosit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12
CPCG01N31/12
Inventor 张欣王跃秦思雨曹家皓王妍陶
Owner BEIJING JIAOTONG UNIV
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