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A time-averaged temperature field data conversion method for automotive engine postprocessing

An automobile engine and time-averaging technology, which is applied in the field of data conversion, time-average temperature field data conversion, and transient temperature field data exchange. and direct conduction functions to meet the needs of post-processing analysis

Active Publication Date: 2021-02-09
WUXI WEIFU LIDA CATALYTIC CONVERTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among the analysis software used in the market, the ones that can realize the direct conversion of temperature field data are mainly the same platform, such as ANSYS and FLUNENT, ABAQUS and Star-CCM+, etc. The other software of different platforms basically do not have the time average calculation and direct conversion of temperature field data. Conduction function, it is difficult to meet the analysis needs of automotive engine aftertreatment analysis

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with specific examples.

[0015] In order to realize the direct exchange of data between the AVL-FIRE software and the finite element software ABAQUS, quickly realize the time-average calculation and format conversion of the transient temperature field file, and meet the needs of the automotive engine post-processing analysis, the conversion method of the present invention includes the following step:

[0016] Step 1. Provide the CFD temperature field calculated by the AVL-FIRE software, and read the CFD temperature field according to the required number of grid nodes, the start angle of the engine cycle, the end angle of the engine cycle, and the temperature field rotation angle interval to obtain Required temperature field files;

[0017] In the embodiment of the present invention, the CFD temperature field calculated by the AVL-FIRE software is a transient temperature field, and the CFD temperature...

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Abstract

The present invention relates to a kind of time-average temperature field data conversion method that is used for aftertreatment of automobile engine, it comprises the following steps: Step 1, provide the CFD temperature field calculated by AVL-FIRE software, read and obtain the required temperature field file ; Step 2, calculate the time-average temperature field of each grid node; Step 3, sort the time-average temperature field of the above-mentioned grid nodes, and change the node numbers of the grid nodes after the sorting to be finite The node number corresponding to the element grid node, and the ABAQUS finite element software node temperature field assignment keyword is added to each grid node, so that the obtained transient temperature field conversion file can be directly read by ABAQUS. The invention can realize the direct exchange of data between the AVL-FIRE software and the finite element software ABAQUS, quickly realize the time-average calculation and format conversion of the transient temperature field file, and meet the requirements for post-processing analysis of the automobile engine.

Description

technical field [0001] The present invention relates to a data conversion method, in particular to a time-average temperature field data conversion method used for automotive engine post-processing, specifically for the transient temperature field data of AVL-FIRE software and finite element software ABAQUS software The exchange method belongs to the technical field of automobile engine aftertreatment. Background technique [0002] Engine exhaust manifolds and close-coupled exhaust cleaners are key components of engine aftertreatment systems. Due to their harsh working environment, thermal stress fatigue fracture is the most common failure mode. In recent years, with the application of close-coupled after-treatment systems more and more widely, the engine exhaust temperature is getting higher and higher. Fluid-solid coupling analysis and calculation are used to predict the temperature gradient and heat of exhaust manifold and close-coupled exhaust purifier. The practice of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/54G06F30/23
CPCG06F9/543G06F30/23
Inventor 陈增响马相雪何伟娇张俊超蔡龙王淑丽
Owner WUXI WEIFU LIDA CATALYTIC CONVERTER