Development of a CFD model and procedure for flows through in-stream structures

IF 1.4 Q4 WATER RESOURCES

Journal of Applied Water Engineering and Research Pub Date : 2021-10-04 DOI:10.1080/23249676.2021.1964388

Y. Lai, David L. Smith, David J. Bandrowski, Yuncheng Xu, C. Woodley, Kaitlin E. Schnell

引用次数: 4

Abstract

Large wood (LW) has been widely used in river restoration projects due to its ecological benefit. 3D modeling has rarely been conducted. In this study, a 3D modeling procedure is proposed and a new 3D model is developed. The model incorporates advanced CFD techniques and is easy to apply. An engineered log jam (ELJ) is constructed and an experiment is conducted. The data are used to demonstrate the procedure and validate the CFD model. A comparison of the predicted and measured velocity shows that agreement is good with the Nash-Sutcliffe coefficient about 0.4 and index of agreement about 0.85. The model is further applied to a curved channel with ELJ on the outer bank, demonstrating the use of the 3D model to guide the proper representation of ELJs in a 2D model. The 3D model may be used to reveal complex flow patterns generated by LW for ecological benefit analysis.

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流中流动结构CFD模型和程序的开发

大型木材因其生态效益而被广泛应用于河流修复工程中。很少进行三维建模。在本研究中，提出了一种三维建模程序，并开发了一种新的三维模型。该模型采用了先进的CFD技术，易于应用。构造了一种工程测井堵塞器（ELJ），并进行了实验。这些数据用于演示该程序并验证CFD模型。预测速度和测量速度的比较表明，Nash-Sutcliffe系数约为0.4，一致性指数约为0.85。该模型进一步应用于外堤ELJ的弯曲河道，演示了使用3D模型来指导在2D模型中正确表示ELJ。3D模型可用于揭示LW产生的复杂流型，用于生态效益分析。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Applied Water Engineering and Research WATER RESOURCES-

CiteScore

2.90

自引率

16.70%

发文量

期刊介绍： JAWER’s paradigm-changing (online only) articles provide directly applicable solutions to water engineering problems within the whole hydrosphere (rivers, lakes groundwater, estuaries, coastal and marine waters) covering areas such as: integrated water resources management and catchment hydraulics hydraulic machinery and structures hydraulics applied to water supply, treatment and drainage systems (including outfalls) water quality, security and governance in an engineering context environmental monitoring maritime hydraulics ecohydraulics flood risk modelling and management water related hazards desalination and re-use.