第35卷第2期 2015年6月
核科学与工程
Nuclear Science and Engineering
空间管网中的汽锤计算及分析
江才俊1，张太勇1，自光谱1，胡小燕2
Vol.35
5No.2 Jun.2015
（1.深圳中广核工程设计有限公司，广东深圳518000;2.青海省工程咨询中心，青海西宁810000）
摘要：本文采用特征线法建立模拟复杂管网中可压缩流体运动特性的一维非定常流动数学模型，给出特征线法的流场计算公式，编制蒸汽管网汽锤计算软件，将弯管和三通部件等一维数值结果与fluent软件的三维数值模拟结果进行对比，结果表明：编制的蒸汽管道汽锤计算软件在计算精度上可以满足工程需要。运用该软件对某核电厂主蒸汽系统管网的汽锤效应进行数值分析，得到由阀门动作引起的管网内部压力与速度波动与管网边界及开关阀时间的关系，所编制的汽锤计算软件还具有构建管网模型简便、节省计算资源与时间等优点。
关键调：汽锰；等摘假设；特征线法；汽镭计算软件；数值模拟
中图分类号：TL3
文章标志码：A
文章编号：0258-0918(2015)02-0222-08
Calculation andAnalysis of Gas Hammer inSpace Pipe JIANG Cai-jun', ZHANG Tai-yong', BAI Guang-pu', HU Xiao-yan
(1. China Nuclear Power Design Co. , Ltd. (Shenzhen), Shenzhen of Guangdong Prov. 518000, China:
2. Qinghai Engineering Consulting Center, Xining of Qinghai Prov. 810000, China)
Abstract: Based on isentropic equation, this paper analyzed the transient flow of compressible fluid, and derived the calculation formula of flow field in space pipe. Using software developed to calculate the flow field of selected elbow and tee, and calculation results showed that the accuracy of gas hammer software developed was high enough for engineering. Through the calculation of a space pipe constructed referring to the main stream system of a nuclear power plant, the relationship between the pipe internal pressure and the velocity fluctuation with space pipe boundary as well as the valve switch time obtained.Moreover, the gas hammer software developed is more convenient for constructing space pipe and less consumption of time during calculation. Key words: gas hammer; isentropic equation; characteristic method; software of gas hammer; numerical simulation
水锤和汽锤均为管网系统中普遮发生的现象[1-3]，因汽锤对管路系统造成的损坏并不会在收稿日期：2014-01-17修回日期：2014-12-19
短期内表现出来，而是积累到一定程度才会对管路造成损坏，故相比于水锤，对汽锤的研究相
作者简介：江才俊（1980一），男，潮北人，硕士，现从事核电站常规岛设计工作 222