管道耦合水击的最优阀调节问题研究

Study on Optimal Valve Stroking of Coupling Waterhammer in the Pipeline

根据流固耦合理论,研究了耦合水击过程中的最优阀调节问题。建立了阀门最优化调节的数学模型,并研究了模型的求解方法。在算例分析中,分别按限定压力或应力阀调节问题进行计算,得出了不同条件下的最优阀调节规律及瞬变响应曲线。计算结果表明:在水击过程中,最大水击压力和最大米塞斯应力不一定出现在同一位置且不一定同时达到最小;以米塞斯应力为优化对象对管道的水击响应控制更为有利。

Based on the theory of fluid structure interaction,the problem on optimal valve stroking is studied in the process of coupling waterhammer.The mathematical model of optimal valve stroking is developed and corresponding solution is given.In the calculation cases,the problems on valve stroking of restricted pressure or stress are solved respectively.Optimal valve stroking rules and transient response curves are obtained in different conditions.The results show that maximum waterhammer pressure and Mises stress are not always in the same situation and they do not always touch minimum values at the same time either.It is more advantageous to control waterhammer response in the pipeline if Mises stress is regarded as optimized object.