Hydrodynamic behavior of compound rectangular open channels
Hydrodynamic behavior of compound rectangular open channels
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DOI：
10.1061/(asce)0733-9429(1993)119:3(390
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发表时间：
1993-03
影响因子：
2.4
通讯作者：
D. Naot;I. Nezu;H. Nakagawa
中科院分区：
文献类型：
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作者：
D. Naot;I. Nezu;H. Nakagawa
阐述了复式矩形明渠紊流对滩地水深、糙率、对称性和渠道雷诺数的水动力响应。对Tominaga和Nezu在1991年测量的四种基本非对称通道中的流动进行了数值模拟，以及其他通道配置，包括对称通道。湍流模型采用能量耗散模型，并结合Naot和Rodi在1982年提出的代数应力模型。使用Patankar和Spalding的抛物线压力校正算法求解三维流。实例表明，摩擦系数的估计，和河漫滩内部和其阈值之间的质量交换率。
The hydrodynamic response of the turbulent flow in a compound rectangular open channel to the flood-plain depth, roughness, and symmetry, and to the channel Reynolds number is demonstrated. The flow in the four basic asymmetric channels measured by Tominaga and Nezu in 1991 is numerically simulated, as well as other channel configurations, including symmetric channels. Turbulence is modeled by the energy-dissipation model, combined with the algebraic stress model suggested by Naot and Rodi in 1982. The three-dimensional flow is solved using the parabolic pressure correction algorithm of Patankar and Spalding. The examples suggest estimations for the friction factors, and the mass exchange rate between the flood plain interior and its threshold.