摘要
采用雷诺平均Navier-Stokes(RANS)方程组,其中动量方程的雷诺应力项用k-ω涡黏紊流模型求解,结合VOF方法跟踪自由水面,运用Fluent软件模拟了明渠180°弯道水流的三维特性。通过将数值模拟的水位结果与试验资料进行比较,表明数值模拟能够有效地预测弯道水面高度的变化范围以及水面横比降的主要影响范围;同时分析了弯道水流不同水深的平面流场和典型断面弯道环流分布。
this paper simulates the characteristics of 3D U-style 180~ bend flow in an open channel using software Fluent with k-to turbulence model and VOF model, to solve the Navier-Stokes equations. The comparison between the numerical simulation result of water depth and experimental data proves that the numerical simulation can effectively forecast the variation range of both water depth and transverse slope of water surface. Furthermore, horizontal flow fields in different water depths and distribution of circular current in typical sections are analyzed.
出处
《水运工程》
北大核心
2012年第3期46-49,共4页
Port & Waterway Engineering
基金
国家自然科学基金资助项目(51179069)
