液压与气动2023，Vol.47Issue(12)：91-98,8.DOI:10.11832/j.issn.1000-4858.2023.12.013
非负矩阵分解的高压调节阀流场重构
Flow Field Reconstruction of High-Pressure Control Valve Based on Nonnegative Matrix Factorization
摘要
Abstract
Coal liquefaction technology is an effective approach to ensuring China's energy security and stable supply,and the thermal high-split control valve is a core equipment in this technology.This article proposes a flow field reconstruction method for control valve under high-pressure conditions based on non-negative matrix factorization(NMF)and process tomography(PT).It is used to reconstruct the flow field of the control valve quickly and accurately under high-pressure operating conditions.Firstly,the distribution characteristics of the control valve flow field under high-pressure conditions are calculated,and a CFD sample database of the control valve under high-pressure conditions is established.Secondly,the sample data is decomposed using NMF to extract the base vectors that represent the flow field characteristics.Then,by linearly combining the base vectors and using process tomography(PT)technology,the fast reconstruction of the control valve flow field is achieved.Finally,the error between the reconstructed flow field and the simulated flow field is analyzed to verify the accuracy and feasibility of this method.Experimental results show that the proposed flow field reconstruction method can accurately and quickly reconstruct the flow field,significantly reducing the required reconstruction time.关键词
高压调节阀/流场重构/非负矩阵分解/CFDKey words
high pressure control valve/flow field reconstruction/non-negative matrix factorization/CFD分类
机械制造引用本文复制引用
张雨佳,刘秀梅,李贝贝,刘威威,贺杰..非负矩阵分解的高压调节阀流场重构[J].液压与气动,2023,47(12):91-98,8.基金项目
中国矿业大学研究生创新计划(2023WLKXJ089) （2023WLKXJ089）
江苏省研究生科研实践创新计划 （）
江苏省自然科学基金(BK20171189) （BK20171189）
江苏省优势学科建设资助项目(PAPD) （PAPD）
