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Method for calculating flow resistance and noise of automobile fluid pipeline products

A flow resistance and calculation method technology, applied in calculation, computer-aided design, design optimization/simulation, etc., can solve problems such as time-consuming, increase R&D costs, shorten product development cycle, etc., and achieve the goal of overcoming cumbersome work and shortening the development cycle Effect

Pending Publication Date: 2022-04-01
XUELONG GRP
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  • Application Information

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Problems solved by technology

Carrying out experiments and measurements for each designed product will not only greatly increase the cost of research and development, but also consume a lot of time, which is not conducive to shortening the product development cycle

Method used

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  • Method for calculating flow resistance and noise of automobile fluid pipeline products
  • Method for calculating flow resistance and noise of automobile fluid pipeline products
  • Method for calculating flow resistance and noise of automobile fluid pipeline products

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Embodiment Construction

[0031] The present invention will be further described in detail below with reference to the examples and drawings, but the implementation of the present invention is not limited thereto.

[0032] Use an automobile intake pipeline as the calculation object of embodiment 1, the intake pipeline is as figure 2 shown. A calculation method for flow resistance and noise of automotive fluid pipeline products, comprising the following steps:

[0033] P1: Establish the geometric model of the fluid domain of the automobile pipeline product through the three-dimensional drawing software, and determine the position of the noise detection point on the geometric model. As preferably, Embodiment 1 selects a noise monitoring point at the outlet of the pipeline, and the position of the noise monitoring point is as follows image 3 shown.

[0034] P2: Import the geometric model into the mesh division software, divide the two-dimensional mesh, and generate a three-dimensional mesh based on t...

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Abstract

The invention relates to a method for calculating flow resistance and noise of automobile fluid pipeline products, which is characterized in that pressure drop of an inlet and an outlet of a pipeline and a noise pressure level of a detection point are calculated through CFD numerical simulation, and the flow resistance and the noise of the pipeline can be analyzed based on a calculation result. The method comprises the following steps: establishing a geometric model of an automobile pipeline fluid domain, and determining the position of a noise monitoring point; importing the geometric model into grid division software to generate a three-dimensional grid; importing the grids into fluid simulation software; setting calculation control parameters in fluid simulation software, endowing the model material with characteristic parameters, determining boundary conditions and performing steady-state calculation; after steady-state calculation is completed, noise monitoring points are set, control parameters are changed, the time step length and the step number are set, and transient calculation is carried out; and obtaining required data after a result is calculated, and calculating the pressure drop of a pipeline product and the noise of a monitoring point. And whether the flow resistance and noise elimination design of the product meet the requirements or not can be analyzed, and a basis is provided for model selection and development of the product.

Description

technical field [0001] The invention belongs to the technical field of fluid pipelines, and in particular relates to a calculation method for flow resistance and noise of automotive fluid pipeline products. Background technique [0002] Auto parts include a variety of fluid pipeline products, such as engine intake and exhaust pipelines, coolant pipelines, air conditioning pipelines, etc. The pros and cons of automotive fluid pipeline products have a significant impact on vehicle performance. Flow resistance and noise are two important parameters to evaluate the performance of automotive pipeline products. When the fluid flows in the pipeline, it will be subjected to flow resistance, which will cause inconsistent pressure at the inlet and outlet of the pipeline. The pressure difference between the inlet and outlet is the pressure drop of the intake pipeline. The smaller the pressure drop, the smaller the flow resistance of the fluid in the pipeline, and the better the flow p...

Claims

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Application Information

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IPC IPC(8): G06F30/15G06F30/23G06F30/28G06F113/08G06F119/10G06F119/14
Inventor 虞雷斌胡文轩王新玲史嵩雁马明段耀龙
Owner XUELONG GRP
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