Results 181 to 190 of about 15,448 (224)

Sediment Transport Modeling in HEC RAS

Impacts of Global Climate Change, 2005
Sediment transport capabilities have been added to the Hydrologic Engineering Center's River Analysis System program (HEC-RAS). HEC RAS can perform mobile bed sediment routing computations with quasi steady (histogram) flow series data. For each flow in the time series a water surface profile is calculated.
Gary W. Brunner, Stanford Gibson
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การจำลองการเกิดน้ำท่วมในพื้นที่ลุ่มน้ำเจ้าพระยาตอนกลางด้วยแบบจำลอง HEC-RAS

2023
งานวิจัยนี้ประยุกต์ใช้แบบจำลองชลศาสตร์ HEC-RAS เพื่อการจำลองและคาดการณ์การเกิดน้ำท่วม ในลุ่มน้ำเจ้าพระยาบริเวณตั้งแต่ท้ายเขื่อนเจ้าพระยา จ.ชัยนาท จนกระทั่งถึง อ.เมือง จ.อ่างทอง โดยทำการจำลองการไหลในลำน้ำแบบหนึ่งมิติ (1D) และการหลากของน้ำล้นตลิ่งในลักษณะสองมิติ (2D) ในการจำลองการไหลแบบหนึ่งมิติ ผู้วิจัยทำการเทียบมาตรฐานแบบจำลอง โดยใช้ข้อมูลอัตราการไหล ...
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PELATIHAN HEC-RAS BAGI PEMULA

Jurnal Abdimas Mandiri, 2021
Perencanaan analisis maupun pengendalian dalam bidang pengairan dibutuhkan untuk mengurangi risiko kerusakan dan melakukan pengendalian dalam pekerjaan pengairan seperti banjir, penampang sungai, dan normalisasi. Dalam rangka menunjang dan mempermudah dalam melakukan pekerjaan perhitungan maupun simulasi, diperlukan program pendukung untuk membantu ...
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Hydraulic Modeling beyond HEC-RAS

Impacts of Global Climate Change, 2005
A drainage swale hydraulic analysis was conducted by WEST Consultants, Inc. as part of a dispute regarding a proposed subdivision. The primary purpose of the study was to evaluate the adequacy of the proposed drainage improvements. The downstream portion of the flow system consisted of: a steep triangular channel discharging into a debris basin, a ...
Dragoslav L. Stefanovic, Thomas R. Grindeland, Christine Jenkins   +2 more
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Flood Modelling and Simulation using HEC-RAS

2023
Natural disasters are one of the main causes of worry for the majority of nations because they severely harm the global economy. One of the natural disasters that occur on a global scale that seriously damages infrastructure and claims thousands of lives is flooding.
Mohd. Usman Saeed Khan, Maaz Abdullah, Arisha Aslam Khan   +2 more
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Sensitivity Analysis of Parameters in HEC-RAS Software

Applied Mechanics and Materials, 2014
As for the level of tail-water often rose when the situation of tailrace river changing during the process of construction of hydroelectric power station, one-dimensional mathematical model is used through two procedures to solve this problem. In the first, the sensitivity of three key parameters including roughness, cross-section spacing Δs, starting ...
Shuai Li, Jian Min Zhang, Wei Lin Xu, Yu Rong Wang, Yong Peng, Jun Ning Li, Xiao Long He, Pan Li   +7 more
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Dam and Levee Breaching with HEC-RAS

World Water & Environmental Resources Congress 2003, 2003
With the release of HEC-RAS 3.1 (November, 2002), users can now perform dam and levee breaching analyses. This paper discusses the methodology used to perform the breaching, as well as the available options. The data required to perform such an analysis is reviewed, and available output from the model is displayed.
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Advanced Guidance on Use of Steady HEC-RAS

World Environmental and Water Resources Congress 2008, 2008
HEC-RAS is a one-dimensional steady or unsteady open channel flow model developed by the U.S. Army Corps Engineers' Hydrologic Engineering Center. It is probably the most widely used one-dimensional program in the world, and is used for a variety of applications, such as flood insurance and flood reduction studies, bridge hydraulics, stream restoration,
Henry H. Hu, Raymond Walton
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Common Modeling Mistakes Using HEC-RAS

World Environmental and Water Resources Congress 2007, 2007
The U.S. Army Corps of Engineers River Analysis System (HEC-RAS), developed by the Hydrologic Engineering Center, has long been the standard for one- dimensional hydraulic modeling. Despite the wide spread use of the program, even seasoned engineers can fall victim to some common modeling mistakes using HEC-RAS.
Iwan M. Thomas, David T. Williams
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The Ohio River Community HEC-RAS Model

World Environmental and Water Resources Congress 2010, 2010
In this paper we describe the Ohio River Community HEC-RAS Model (Model) and include some preliminary results. The Model is a cooperative effort involving the U.S. National Weather Service (NWS), Ohio River Forecast Center (OHRFC) and the U.S. Army Corps of Engineers (USACE), Great Lakes and Ohio River Division (LRD), Water Management Division. Initial
Thomas Adams, Sherry Chen, Raymond Davis, Trent Schade, Deborah Lee   +4 more
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