Simulation calculation method for aerodynamic performance of automobile wind protecting cover

A technology of simulation calculation and aerodynamic performance, applied in calculation, design optimization/simulation, special data processing applications, etc., can solve the problems of long research cycle and high cost investment, achieve good wind protection effect, reduce calculation amount, Reduce the effect of repetitiveness

Active Publication Date: 2017-04-05
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional windshield design method needs to obtain data through a large number of experiments, the research cycle is long, and the cost investment is relatively high. At present, the development of commercial flu

Method used

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  • Simulation calculation method for aerodynamic performance of automobile wind protecting cover
  • Simulation calculation method for aerodynamic performance of automobile wind protecting cover
  • Simulation calculation method for aerodynamic performance of automobile wind protecting cover

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Embodiment Construction

[0028] The purpose of the present invention will be further described in detail through specific examples below, and the examples cannot be repeated here one by one, but the implementation of the present invention is not therefore limited to the following examples.

[0029] An aerodynamic performance simulation calculation method of an automobile windshield provides an aerodynamic performance numerical calculation method for the optimal design of an adapted annular fan phase windshield, and is realized according to the following steps:

[0030] Step 1: Establishment of the physical model of the fan shield;

[0031] Use the 3D modeling software CATIA to establish the geometric model of the cooling fan and the windshield, take the Z axis as the rotation axis of the fan, the fan rotation direction as the positive rotation direction, and the negative direction of the Z axis as the incoming flow direction. The modeling of this embodiment adopts 7 blades, the diameter is 286mm, and ...

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Abstract

The invention discloses a simulation calculation method for an aerodynamic performance of an automobile wind protecting cover. The simulation calculation method for the aerodynamic performance of the automobile wind protecting cover comprises a first step of building a physical model of the fan wind protecting cover; a second step of carrying out calculation region setting and grid division; a third step of setting border conditions; a fourth step of carrying out simulation calculation on the aerodynamic performance of the wind protecting cover in the presence of a given rotating speed of the fan by utilizing CFD simulation software Fluent; and a fifth step of optimizing a wind protecting ring structure based on a vortex dynamic theory and characteristics of a flow field around vanes, and benchmarking with experimental data to verify accuracy of the model. By post-processing a simulation calculation result and utilizing the vortex dynamic theory and the characteristics of flow lines around the fan, the structure of the wind protecting cover is optimized, and the performance of the fan wind protecting cover is accordingly improved.

Description

technical field [0001] The invention relates to a method for simulating and calculating the aerodynamic performance of an automobile windshield, in particular to a simulation calculation for an automobile windshield assembly adapted to use with an annular fan. Background technique [0002] A large amount of heat is generated during the operation of the automobile engine, which increases the temperature of the various components in the engine and reduces the working efficiency of the engine. Long-term overheating increases the risk of damage to parts and shortens the service life of the engine. The modern engine heat dissipation system is based on the heat dissipation of the water tank, and is equipped with a cooling fan to achieve a better heat dissipation effect. Improving the working efficiency of the cooling fan can remove more heat dissipation with lower energy consumption. The research on high-efficiency fans has always been a focus in the field of engine heat dissipati...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20G06F30/23Y02T90/00
Inventor 潘登辉上官文斌
Owner SOUTH CHINA UNIV OF TECH
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