有压与无压交接水力系统有限体积法模拟分析OA北大核心CSTPCD
Finite volume method simulation analysis of combined hydraulic transients of pressurized pipe flow and open channel flow
针对含无压段的长距离调水工程,采用二阶Godunov格式的有限体积法进行有压与无压交接水力计算模拟.首先根据有限体积法,分别对有压与无压的控制方程离散,采用Riemann求解器计算通量,并引入MINMOD斜率限制器进行数据重构.边界处采用虚拟边界,实现了计算区域与边界处的统一.在 1 个无压计算时步内,进行数个有压计算,从而实现有压与无压的交接计算.将所建模型与传统特征线法计算结果进行对比,验证了所建模型的精确性.结果表明,在库朗数小于 1.00…查看全部>>
The finite volume method(FVM)of the second-order Godunov scheme was used to simulate the long-distance water conveyance system with pressurized and open channel sections.Firstly,the governing equations of pressurized pipe flow and open channel flow were respectively discretized ac-cording to FVM,the flux was calculated by the Riemann solver,and the MINMOD slope limiters were introduced to avoid spurious oscillations during data reconstruction.The virtual-bou…查看全部>>
吴金远;周领;胡垠盈;许宇阳
河海大学水利水电学院,江苏 南京 210098||上海市政设计研究总院(集团)有限公司,上海 200092河海大学水利水电学院,江苏 南京 210098||长江保护与绿色发展研究院,江苏 南京 210098河海大学水利水电学院,江苏 南京 210098河海大学水利水电学院,江苏 南京 210098
水利科学
有压管流明渠流有限体积法Godunov格式水力瞬变
pressurized pipe flowopen channel flowfinite volume methodGodunov schemehydraulic transients
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国家自然科学基金资助项目(51839008,51679066)霍英东教育基金会青年教师基金项目(161068)
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