摘要
在大型建筑与工业设施中,三维CFD虽能精确模拟管网流动与传热,但其计算成本高、响应慢,难以适用于多工况迭代与系统级优化。本文提出一种基于元件代理模型的复杂管网水动力学性能快速预测方法。该方法将风机、阀门、弯头等抽象为可插拔多端口元件,并嵌入一维网络进行联立求解;在元件层面,利用高保真CFD构建POD降阶模型,实现精度传递与计算复杂度显著降低。以试验台为例,代理模型在节点压力与支路流量预测上与商业软件及实验结果高度一致,误差较小、效率显著提升。研究表明,该方法在保证精度的同时具备模块化与可扩展性,为复杂管网的快速设计与优化提供了有效技术路径。
s fans,valves,elbows,etc.as pluggable multi-port components and empresses them in a one-dimensional network for simultaneous solution.At the component level,high-fidelity CFD is utilized to construct a POD order reduction model,achieving a significant reduction in precision transfer and computational complexity.Taking the test bench as an example,the proxy model is highly consistent with the commercial software and experimental results in predicting node pressure and branch flow,with small errors and significantly improved efficiency.Research shows that this method,while ensuring accuracy,has modularity and scalability,providing an effective technical path for the rapid design and optimization of complex pipe networks.
作者
李希
杨海超
张红娜
李小斌
李凤臣
白玮
闫征
宋建军
LI Xi;YANG Hai-chao;ZHANG Hong-na;LI Xiao-bin;LI Feng-chen;BAI Wei;YAN Zheng;SONG Jian-jun(School of Mechanical Engineering,Tianjin University,Tianjin 300350,China;China Nuclear Power Engineering Co.,Ltd.,Beijing 100089,China)
出处
《节能技术》
2025年第6期506-511,共6页
Energy Conservation Technology
