U型节流槽流量特性多目标优化  

Multi-objective Optimization of U-type Throttle Slot Flow Characteristics

作　　者：张立强[1] 陈高鹏 齐长鑫 ZHANG Li-qiang;CHEN Gao-peng;QI Chang-xin(School of Energy and Power Engineering,Lanzhou University of Technology)

机构地区：[1]兰州理工大学能源与动力工程学院

出　　处：《化工机械》2022年第3期462-467,488,共7页Chemical Engineering & Machinery

基　　金：国家自然科学基金项目(51565027)。

摘　　要：以某内滑阀内部流场为研究对象,利用Fluent软件的Standard k-ε湍流模型对液压冲击机构进行仿真分析。通过改变节流槽的深度、宽度及半圆轴长度等,分析节流槽结构参数对其流量特性的影响。利用拉丁方试验设计获得相应结构参数下的特征试验方案与仿真结果,利用Kriging插值法求得在整个尺寸范围内的试验结果,再利用遗传优化算法得到满足流量快速响应特性和压力冲击性能的U型节流槽Parato解集,选取特定节流槽结构参数对优化结果进行验证。仿真结果表明:优化后的U型节流槽结构可在保证流量快速性要求的同时降低阀口的压力冲击。Through taking internal flowfield within a slide valve as an example,Standard k-ε turbulence model in Fluent was adopted to simulate and analyze hydraulic impact mechanism,including analyzing throttle structure parameters’influence on the flow characteristics of U-type groove by changing the groove depth and width and half-axis length.Through making use of latin square experimental design,both characteristic test scheme and simulation results under corresponding structural parameters were obtained,including having the Kriging interpolation method adopted to obtain test results in the whole size range and the genetic optimization algorithm used to obtain Parato solution set of U-shaped throttling groove that meeting characteristics of rapid flow response and pressure impact performance.Simulation results show that,the optimized U-shaped throttle groove structure can effectively reduce valve pressure impact while ensuring the flow speed.

关 键 词：滑阀 U型节流槽 Kriging代理模型 流量特性 优化算法 

分 类 号：TQ055.81[化学工程]