摘要
水击问题会对水利枢纽的正常运行造成严重危害,模拟其过程至关重要。考虑TVD格式及水流的迎风性,应用于水击方程组中,模拟简单管道中的水击压力变化。并与Lax-Friedrichs(LF)、Mac Cormark(MC)、未考虑迎风性的TVD格式及解析解进行对比。结果表明:基于迎风性的TVD格式具有高分辨率、高精度、低耗散性等优点,相比于未考虑迎风性的TVD格式,其有更强的压制性,耗散性更弱。
It is crucial to simulate the process of water hammer because of its serious harm to the normal operation of running hydro. Numerical method to simulate water hammer phenomenon is a hot research currently. In this paper a TVD scheme considered the windward applying in numerically the water hammer couple was used to solve the water hammer equations to simulate water hammer pressure in a simple pipeline. A comparison with Lax-Friedrichs, MacCormark the TVD scheme not considered windward and analytical solutions shows that the TVD scheme considered the windward has the advantages of high resolution, high accuracy and low dissipation. The TVD scheme considered the windward is more repressive and less dissipative than that of the TVD scheme.
出处
《人民黄河》
CAS
北大核心
2015年第11期107-109,113,共4页
Yellow River
关键词
迎风性
TVD
水击方程
水击数值模拟
windward
TVD
water hammer equation
numerical simulation of water hammer
