期刊文献+

二维坡面雨洪水动力模型研究 被引量:4

Numerical study of two-dimensional hydrodynamic model for overland flood
原文传递
导出
摘要 由降雨产生的坡面洪水运动过程复杂,其可靠模拟仍有待深入。该文建立了基于浅水方程的二维坡面雨洪动力过程模拟的动力波模型,选用单坡、三阶坡面和复杂起伏多变坡面的雨洪运动为数值算例,进行了数值检验并与忽略惯性项的扩散波模型进行了对比分析。结果表明:动力波模型可以较好地模拟洪水过程,在峰现时间,洪峰水位的捕捉和退水过程等方面都表现出优良的特性;而且动力波模型在复杂坡面雨洪过程计算的适应性方面表现更佳。而扩散波模型在计算精度和稳定性方面都相对要差。虽然扩散波模型在单坡面算例中的计算精度也较高,但因受忽略惯性项的影响,退水过程有明显偏离。 The process of overland flood propagation caused by rainfall is complex, its reliable simulation remains to be further investigated. A two-dimensional hydrodynamic model, based on the fully dynamic shallow water equations, is developed to simulate the overland flood propagation in this paper. Inorder to conduct a numerical test and compare with diffusion wave model ignoring the inertia item, a single plane, a cascade of three planes, complicated and changeable overland flood propagation as examples of numerical simulation are selected. The results show that the full dynamic wave model can well simulate the overland flood process. It exhibits excellent properties in simulating peak time, capturing peak stage and describing recession process. The full dynamic wave model also have better performances in overland flood simulation over complicated terrain. However, the prediction accuracy and calculation stability of diffusion wave model are relatively poor. Although the diffusion wave model has a high accuracy in simulating flood propagation of a single plane, but the recession limb of it has obvious deviation due to the influence of the inertia item.
出处 《水动力学研究与进展(A辑)》 CSCD 北大核心 2017年第4期484-490,共7页 Chinese Journal of Hydrodynamics
基金 国家重点基础研究发展计划(973)(2012CB417000) 水体污染控制与治理科技重大专项(2017ZX07603-001)资助项目~~
关键词 坡面流 扩散波 动力波 准确性 稳定性 overland flow diffusive wave dynamic wave stability
  • 相关文献

参考文献7

二级参考文献127

  • 1谭维炎,胡四一.浅水流动计算中—阶有限体积法Osher格式的实现[J].水科学进展,1994,5(4):262-270. 被引量:25
  • 2刘青泉,李家春.降雨坡面径流汇集模型及其在茅坪滑坡中的应用[J].自然科学进展,2006,16(6):662-671. 被引量:7
  • 3潘存鸿.三角形网格下求解二维浅水方程的和谐Godunov格式[J].水科学进展,2007,18(2):204-209. 被引量:41
  • 4Schmittner K E, Giresse P. Modelling and application of the geomorphic and environmental controls on flash flood flow [J]. Geomorphology, 1996,16:337-347.
  • 5Mukhopadhyay B, Cornelius J, Zehner W. Application of kinematic wave theory for predicting flash flood hazards on coupled alluvial fan piedmont plain landforms [J]. Hydrological Processes, 2003,17:839-868.
  • 6Jain M K, Kothyari U C, Ranga Raju K G. A GIS based distributed rainfall--runoff model [J]. Journal of Hydrology, Elsevier, 2004,299 : 107-135.
  • 7Esteves M, Faucher G S, Vauclin M. Overland flow and infiltration modeling for small plots during unsteady rain: numerical results versus observed values [J]. Journal of Hydrology, 2000,228:265-282.
  • 8Fiedler F R, Ramirez J A. A numerical method for simulating discontinuous shallow flow over an infiltrating surface [J]. International Journal of Numerical Methods in Fluids, 2000,32(2):219-240.
  • 9Smith R E. Infiltration Theory for Hydrologic Applications [M]. Water Resources Monograph 15, American Geophysical Union, Washington D C, 2002.
  • 10Toro E F. Shock-Capturing Methods for Free-Surface Shallow Flows [M]. Wiley, England, 2001.

共引文献103

同被引文献55

引证文献4

二级引证文献34

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部