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| 引用本文： | 李侃禹,曹志先,刘青泉.??????????????????о?[J].力学与实践,2009,31(1):24-27. |
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| 作者姓名： | 李侃禹 曹志先 刘青泉 |
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| 作者单位： | 武汉大学 水资源与水电工程科学国家重点实验室 |
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| 基金项目： | 欧盟第六框架计划项目(037024);;国家自然科学基金重点项目(50739002)资助 |
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| 摘 要： | 应用一维水沙耦合数学模型研究了可冲刷坡面上滚波的水动力学特性. 模型的基本控制方程
采用完整的、基于守恒定律的一维浅水动力学方程，运用能够捕捉激波和泥沙运动不连续性
的WAF TVD二阶数值格式离散控制方程. 通过复演定床滚波的运动特点，对模型进行了验证.
可冲刷坡面的滚波数值模拟结果表明，床面形态对滚波水动力学特性有显著的影响.
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| 关 键 词： | 滚波 可冲刷坡面 数值模拟 |
| 收稿时间： | 2008-4-8 |
| 修稿时间： | 2008-7-31 |
NUMERICAL SIMULATION OF ROLL WAVES IN OVERLAND FLOW OVER MOVABLE BED |
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| LI Kanyu
,
CAO Zhixian
,
LIU Qingquan.NUMERICAL SIMULATION OF ROLL WAVES IN OVERLAND FLOW OVER MOVABLE BED[J].Mechanics and Engineering,2009,31(1):24-27. |
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| Authors: | LI Kanyu CAO Zhixian LIU Qingquan |
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| Institution: | *;+;+;2;**;Changjiang Waterway Bureau;Wuhan 430010;China;State Key Laboratory of Water Resources & Hydropower Engineering Science;Wuhan University;Wuhan 430072;China;Institute of Mechanics;Chinese Academy of Sciences;Beijing 100190;China |
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| Abstract: | A numerical study on mobile bed hydraulics of roll waves
with sediment transport and morphological evolution is presented. The
governing equations of the model comprise the shallow water hydrodynamics
equations closed with the Manning formulation for the boundary resistance.
The second-order Total-Variation-Diminishing version of the
Weighted-Average-Flux method, along with the HLLC approximate Reimann
Solver, is used to solve the governing equations, which can properly capture
shock waves and deal with irregular boundaries.
Brock's laboratory experiments of roll waves in a fixed-bed channel are
reproduced.
Numerical simulations show the development and propagation
of roll waves over mobile-bed. It is shown that the morphological evolution
has a great effect on the roll waves' dynamic characteristics. |
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| Keywords: | roll waves mobile bed numerical simulation |
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