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Simulation method for wind pressure coefficient of reflection plane antenna panel

An antenna panel and numerical simulation technology, applied in the field of CFD numerical simulation, can solve problems such as difficulty in satisfying dynamic similarity conditions, inconvenient arrangement of pressure measuring tubes, and increased model thickness, etc., to achieve comprehensive result collection, low cost, and easy control Effect

Inactive Publication Date: 2017-06-20
XIDIAN UNIV
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Problems solved by technology

[0011] Due to the relatively thin reflective surface of the telescope structure, it is very inconvenient to arrange the pressure measuring tubes, resulting in the size effect caused by increasing the thickness of the model; in addition, it is difficult to meet the dynamic similarity conditions in the wind tunnel test technology, which will inevitably lead to experimental errors

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  • Simulation method for wind pressure coefficient of reflection plane antenna panel
  • Simulation method for wind pressure coefficient of reflection plane antenna panel
  • Simulation method for wind pressure coefficient of reflection plane antenna panel

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Embodiment Construction

[0065] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation examples.

[0066] refer to figure 1 , a reflector antenna panel wind pressure coefficient numerical simulation method, it comprises the following steps:

[0067] (1) Establish a geometric model according to the prototype size of the reflector antenna panel.

[0068] Using the prototype size avoids size effects that might affect the results. Due to the current grid generation technology, for the complex space flow field area with sharp corners divided by the complex space truss structure, it is impossible to perform effective mesh division for numerical solution, and the back frame structure does not affect the wind field main factor, so it is not considered.

[0069] Use the Proe three-dimensional drawing software to establish a rotating paraboloid with a specified reflector antenna panel aperture and focal diameter ratio (pitch angle E=0°,...

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Abstract

The invention discloses a simulation method for the wind pressure coefficient of a reflection plane antenna panel, and the method comprises the steps: firstly building an antenna panel geometric model through ProE software; secondly importing the geometric model into preposed dividing grid software ICEM-CFD, building and computing a flow field region range, and carrying out the grid dividing of the flow field region; thirdly enabling a grid file to be imported into flow field solving software FLUENT, carrying out the computing and solving through a series of settings, and obtaining the wind pressure distribution of the antenna panel; finally exporting the computing and solving result of the FLUENT, and compiling a MATLAB program to solve the blocked mean wind pressure coefficient value. The method solves a problem that a conventional reflection plane antenna is short of related tunnel test data, and determines the blocked wind pressure coefficient values of the antenna panel under various conditions through a software simulation method. The method can provide the visual flow field information, is low in cost, can carry out the repeated operation, facilitates the control of the change of simulation environment conditions, and is complete in result collection.

Description

technical field [0001] The invention relates to the field of CFD numerical simulation, in particular to a numerical simulation method for wind pressure coefficient of a reflector antenna panel. Background technique [0002] In the design of a large-scale high-precision antenna system, the surface accuracy of the antenna reflector is one of the main technical performance indicators, which directly affects the electrical performance of the antenna. With the increase of the antenna diameter and the increase of the operating frequency, the requirements for the accuracy of the antenna reflector are also getting higher and higher. For antennas working in the open air, the wind load has a great influence on the antenna work. Under the action of wind load, the reflective surface of the antenna will deviate from the design surface, so that the system performance of the antenna, such as antenna gain, antenna sidelobe and antenna cross-polarization and other main indicators will decre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30G06F17/50
CPCG06F30/20G06F2111/10G06T17/30
Inventor 王伟王国创王从思孟鹏飞黄进项斌斌许谦宋立伟李鹏李娜
Owner XIDIAN UNIV
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