SpatioTemporal Stochastic Open-Dhannel Flow
SpatioTemporal Stochastic Open-Dhannel Flow
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发表时间：
1996
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通讯作者：
T. Gates;Muhammad A. Al-Zahrani
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作者：
T. Gates;Muhammad A. Al-Zahrani
de Saint Venant方程组作为随机偏微分方程组求解，其参数（阻力、床面坡度、断面几何形状、入流过程线、渗流、动量修正系数、结构流系数）为时空随机场。蒙特卡罗模拟，耦合多变量生成的随机场与有限差分近似的流量方程，适用于一个10公里的河段的哥伦比亚河。预测的流速和水深沿着河段的实质性不确定性将影响工程决策。
The de Saint Venant equations are solved as stochastic partial differential equations whose parameters (hydraulic resistance, bed slope, cross-section geometiy, inflow hydrograph, seepage, momentum correction coefficient, structural flow coefficients) are spatiotemporal random fields. Monte Carlo simulation, coupling multivariate generation of the random fields with finite difference approximation of the flow equations, is applied to a 10-km reach of the Columbia River. The substantial uncertainty in predicted flow velocity and flow depth along the reach would influence engineering decision making.