Spiral groove gas film sealing steady-state parameter optimization method based on flow field analysis

By optimizing the spiral groove air film sealing parameters through flow field analysis and simulation software, the problem of frequent parameter changes in experiments was solved, achieving efficient experimental data analysis and parameter optimization, and reducing experimental preparation time and costs.

CN121997655APending Publication Date: 2026-05-08XIAN UNIV OF TECH
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Patent Information

Application Number
CN202610087159.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-22
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

In existing technologies, spiral groove air film sealing experiments require frequent changes to multiple parameters, resulting in a large number of experiments, long cycles, complex processing technology, high material costs, and long preparation time.

Method used

By using a flow field analysis-based method to optimize the steady-state parameters of the spiral groove air film seal, and employing 3D modeling, finite element analysis, and flow field simulation software, mesh generation and thermal-fluid-structure interaction calculations are performed to optimize the spiral groove parameters and reduce experimental workload.

Benefits of technology

Simulation analysis of a model without a manufactured sealing ring was achieved, air film flow field data was obtained, sealing ring parameters were optimized, the workload of subsequent experiments was reduced, and experimental efficiency and accuracy were improved.

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Abstract

The invention discloses a spiral groove gas film sealing steady-state parameter optimization method based on flow field analysis, and the method comprises the steps: building a three-dimensional model of a spiral groove gas film and a sealing ring through three-dimensional modeling software, and carrying out the grid division of the three-dimensional model; setting a gas film steady-state parameter calculation formula and a thermal steady-state energy calculation formula in simulation software, and performing simulation analysis; determining gas film steady-state parameters of the sealing ring according to a simulation result, such as gas film opening force, leakage rate, gas film rigidity and rigidity-to-leakage ratio, so as to explore the sealing performance of the sealing assembly and the direction of subsequent parameter optimization; and finally determining the parameters of the actually processed sealing ring. Through an analogue simulation mode, the redundant workload of a gas film sealing experiment can be effectively reduced, the experiment period is greatly shortened, efficient and accurate technical support is provided for design, parameter optimization and subsequent experiments of spiral groove gas film sealing, and the method has remarkable engineering application value.
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