• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Natural hazards and earth system sciences >3-D numerical approach to simulate the overtopping volume caused by an impulse wave comparable to avalanche impact in a reservoir
【24h】

3-D numerical approach to simulate the overtopping volume caused by an impulse wave comparable to avalanche impact in a reservoir

机译：3-D数值方法，模拟与储层中的雪崩冲击相当的冲击波引起的超顶量

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The impact of an avalanche in a reservoir induces impulse waves,which pose a threat to population and infrastructure. For a goodapproximation of the generated wave height and length as well as theresulting overtopping volume over structures and dams, formulas, which arebasedon different simplifying assumptions, can be used. Further project-specificinvestigations by means of a scale model test or numerical simulations areadvisable for complex reservoirs as well as the inclusion of hydraulicstructures such as spillways.This paper presents a new approach for a 3-D numerical simulation of theavalanche impact in a reservoir. In this model concept the energy and massof the avalanche are represented by accelerated water on the actual hillslope. Instead of snow, only water and air are used to simulate the movingavalanche with the software FLOW-3D. A significant advantage of thisassumption is the self-adaptation of the model avalanche onto the terrain. Inorder to reach good comparability of the results with existing research atETH Zürich, a simplified reservoir geometry is investigated. Thus, areference case has been analysed including a variation of three geometryparameters (still water depth in the reservoir, freeboard of the dam andreservoir width). There was a good agreement of the overtopping volume at thedam between the presented 3-D numerical approach and the literatureequations. Nevertheless, an extended parameter variation as well as acomparison with natural data should be considered as further research topics.
机译：雪崩在水库中的影响引起脉冲波，这对人口和基础设施构成威胁。为了很好地近似所产生的波高和波长以及由此导致的建筑物和大坝上的超顶体积，可以使用基于不同简化假设的公式。通过针对大型储层的比例模型测试或数值模拟以及包括溢洪道在内的水力结构，进一步开展针对特定项目的研究。 本文为雪崩的3-D数值模拟提供了一种新方法。对水库的影响。在此模型概念中，雪崩的能量和质量由实际山坡上的加速水表示。使用软件FLOW-3D代替雪，仅使用水和空气来模拟运动雪崩。这种假设的一个显着优势是模型雪崩能够自动适应地形。为了与苏黎世联邦理工学院的现有研究取得良好的结果可比性，研究了简化的储层几何形状。因此，分析了一个参考案例，其中包括三个几何参数的变化（水库中的静水深度，坝的干舷和水库宽度）。提出的3-D数值方法与文献公式之间，坝上的超挖量有很好的一致性。然而，应将扩展的参数变化以及与自然数据的比较视为进一步的研究主题。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号