基于仿真分析的船用防爆阀阻燃片优化研究

Optimization on flame arrester sheet of explosion proof valve based on simulation analysis

针对防爆阀阻燃片结构设计缺少理论指导,主要依靠实验测试完成设计的问题,给出了一种仿真分析方法,以便于结构优化研究。借助计算流体力学理论和FLUENT仿真平台,建立了阻燃片的优化模型,通过均匀设计方法对阻燃片凸台宽度、凸台角、凸台高度等尺寸数据进行了分析,使用MATLAB对仿真数据进行了回归处理,通过出口总压与温度的散点图寻找性能最佳尺寸。研究结果表明,运用均匀设计和回归分析数值处理方法有利于数据处理和多目标优化,获得的尺寸回归函数能求得性能最佳尺寸;仿真结果与实际情况基本一致,同时该尺寸阻燃片实际测试过程中降压灭焰性能满足要求,有助于防爆阀阻燃片的设计研究。

Aiming at the problem that lack of theoretical guidance and the performance was mainly tested by experiments in the structural de-sign process of flame arrester sheet, the research of structural design and optimization was provided a analysis method of simulation. The opti-mization model of flame arrester sheet was established by CFD and FLUENT simulation platform, flame arrester sheet＇s dimension data of con-vexity width, convexity corner, convexity height were optimized and analyzed by the uniform design method, simulation data were handled by regression analysis with MATLAB, the dimension of best performance was found by scatter diagrams of total pressure and temperature at out-let. The results indicate that the numerical methods of uniform design and regression analysis are favour of data processing and multi-objective optimization, the dimension regression functions are able to gain the dimension of best performance, simulation results are basically identical with actual test results, also this flame arrester sheet can meet performance requirements of reducing pressure and extinguishing fire in the ac-tual test process, this method is helpful to the design of flame arrester sheet.