Control device for temperature gradient of wind tunnel and control method thereof

A technology of temperature gradient and control device, which is applied in the direction of temperature control, measuring device, and testing of machine/structural components using electric means, which can solve the problems of inability to achieve different airflow stratification, simulation, etc.

Active Publication Date: 2019-06-21
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The premise of the above-mentioned atmospheric boundary layer wind tunnel tests is that the airflow is not stratified. In fact, there is a certain gradient in the temperature of the airflow at different locations, which cannot be completely regarded as the same. Simulation of Layered Strength

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  • Control device for temperature gradient of wind tunnel and control method thereof
  • Control device for temperature gradient of wind tunnel and control method thereof
  • Control device for temperature gradient of wind tunnel and control method thereof

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0032] Such as figure 1 As shown, a wind tunnel temperature gradient control device provided by an embodiment of the present invention includes a temperature difference grid, a temperature sensor assembly 5 and a temperature controller 7, wherein the temperature difference grid is a multi-layer structure, and it is arranged in a wind tunnel shrinkage The end of the section is used to stratify t...

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Abstract

The invention belongs to the field of wind tunnel test supporting equipment, and specifically discloses a control device for a temperature gradient of a wind tunnel and a control method thereof. The device includes a temperature difference grid, fixed type temperature sensors, movable type temperature sensors, and a temperature controller; during control, a temperature coefficient matrix is obtained according to distribution of temperatures of each of layers of the temperature difference grid measured by the fixed type temperature sensors and the movable type temperature sensors and the distribution of a temperature of a target position; then the temperature required by each of the layers of the temperature difference grid is obtained by calculation according to the temperature coefficientmatrix and a target temperature gradient required by the target position; and finally, the controller controls heating coils of each of the layers of the temperature difference grid according to thedistribution of the temperatures of each of the layers of the temperature difference grid obtained by the calculation to make each of the layers reach a required temperature. The device can perform stratification on air flow and independently heats the stratified airflow to obtain different temperature gradients, thereby performing stratified simulation on the air flow, and temperature gradient control of the air flow of each of the layers is achieved.

Description

technical field [0001] The invention belongs to the field of wind tunnel test supporting equipment, and more specifically relates to a wind tunnel temperature gradient control device and a control method thereof. Background technique [0002] A wind tunnel refers to a device that uses a power device to drive a controllable airflow in a piping system designed according to certain requirements, and conducts various aerodynamic tests based on the principle of relativity and similarity of motion. The boundary layer wind tunnel is a wind tunnel with a long test section specially used for wind engineering tests. It can be divided into architectural wind tunnels, environmental wind tunnels, and automotive wind tunnels according to different uses. Among them, the architectural wind tunnel is mainly used for civil engineering structures. Wind research, such as wind resistance research of high-rise buildings, large bridges, transmission line towers and other structures. [0003] Most...

Claims

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Application Information

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IPC IPC(8): G05D23/19G01M9/02
Inventor 刘震卿胡一冉
Owner HUAZHONG UNIV OF SCI & TECH
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