Vehicle model selection method based on high-speed train far-field noise high-precision simulation

A high-speed train with high noise technology, which is applied in the field of vehicle model selection based on high-precision simulation of high-speed train far-field noise, can solve problems such as unrealistic selection or optimization, and achieve avoidance of unreasonable attenuation, low numerical dissipation, and small Effect of grid size

Inactive Publication Date: 2020-06-19
TONGJI UNIV +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Existing technologies and methods obviously cannot achieve such type selection or optimization, and methods with higher precision are urgently needed

Method used

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  • Vehicle model selection method based on high-speed train far-field noise high-precision simulation
  • Vehicle model selection method based on high-speed train far-field noise high-precision simulation
  • Vehicle model selection method based on high-speed train far-field noise high-precision simulation

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Embodiment

[0056] A vehicle type selection method based on high-precision simulation of far-field noise of high-speed trains. The method completes the optimal type selection of vehicle types according to the far-field noise simulation test results of different types of trains. The simulation method includes building a reasonable geometric model; Mesh conforming to the flow field characteristics of high-speed trains; setting appropriate boundary conditions; using effective turbulence models and numerical formats; determining appropriate far-field noise evaluation standards and other steps. The simulation method proposed by the invention can be applied to all high-speed train models, has high precision through test verification, and can realize accurate simulation of far-field noise, thereby providing a strong guarantee for vehicle model selection and accurate sequencing of optimization schemes.

[0057] Such as figure 1 As shown, the simulation method includes the following steps:

[005...

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Abstract

The invention relates to a vehicle model selection method based on high-speed train far-field noise high-precision simulation. The method comprises the following steps: S1) constructing a geometric model; S2) dividing grids conforming to the flow field characteristics of the high-speed train by cutting the grids; S3) establishing a far-field noise simulation model; S4) carrying out steady-state flow calculation and transient-state flow calculation according to the noise simulation model, S5) setting a sound source surface and collecting noise source data, and S6) carrying out simulation calculation on high-speed train far-field noise to obtain far-field noise of multiple noise receiving points. The method has the advantages of being high in precision and the like compared with the prior art.

Description

technical field [0001] The invention relates to a train far-field noise simulation method, in particular to a vehicle model selection method based on high-precision simulation of high-speed train far-field noise. Background technique [0002] The high-speed operation of high-speed trains brings strong aerodynamic noise, which has strong noise interference on the ride comfort inside the train and the environment outside the train. As Academician How Huawu pointed out, "The problem of noise and vibration will restrict the bottleneck of further speed-up of my country's high-speed trains." The aerodynamic noise generated by high-speed trains outside the train will cause huge disturbance to the life and work of residents along the line, and it is one of the environmental pollution that must be strictly controlled by laws and regulations in my country and abroad. As the construction of high-speed railways has moved from "four vertical and four horizontal" to "eight vertical and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/15G06F119/10G06F111/04
CPCY02T90/00
Inventor 李启良李卓明贾尚帅张文敏陈羽王毅刚杨志刚
Owner TONGJI UNIV
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