Numerical modelling of flow characteristics over sharp crested triangular hump

Al‐Qadami, Ebrahim Hamid Hussein; Abdurrasheed, Abdurrasheed Said; Mustaffa, Zahiraniza; Yusof, Khamaruzaman Wan; Málek, Miloslav; Ghani, Aminuddin Ab.

doi:10.1016/j.rineng.2019.100052

Cited by 20 publications

(6 citation statements)

References 11 publications

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“…FLOW-3D is a commercial code which uses finite volume method (FVM) and turbulence models to solve continuity and Navier stokes equations [31,32]. The FLOW-3D software also allow the numerical simulation under six degree of freedom which can represent the real experiment condition [28].…”

Section: Methodsmentioning

confidence: 99%

Impact and Mitigation Strategies for Flash Floods Occurrence towards Vehicle Instabilities

Mustaffa¹,

Al‐Qadami²,

Shah³

et al. 2020

Flood Impact Mitigation and Resilience Enhancement

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This chapter presents a flood risk management system for vehicles at roadways, developed from extensive experimental and numerical studies on the impact of flash floods towards vehicle instabilities. The system, easily addressed as FLO-LOW, developed to contradict the assumptions that a vehicle would be able to protect the passengers from the flood impact. Herein the hydrodynamics of flows moving across these roads coupled with the conditions of a static car that would result in vehicle instabilities has been studied. In an attempt to prevent fatalities in commonly flooded areas, permanent structures are installed to warn users regarding water depth at the flooded areas. The existing flood monitoring system only focuses on water conditions in rivers or lake in order to determine risks associated with floods. Thus, there is a need for a better system to understand and quantify a mechanism to determine hydrodynamics instability of a vehicle in floodwaters. FLO-LOW enables the road users to input their vehicle information for a proper estimation of safety limits upon crossing the flood prone area. Preferably, the system enables road users to describe and quantify parameters that might cause their vehicles to become vulnerable to being washed away as they enter the flooded area.

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Section: Methodsmentioning

confidence: 99%

Impact and Mitigation Strategies for Flash Floods Occurrence towards Vehicle Instabilities

Mustaffa¹,

Al‐Qadami²,

Shah³

et al. 2020

Flood Impact Mitigation and Resilience Enhancement

Self Cite

View full text Add to dashboard Cite

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“…In the physical model, applying different scenarios is difficult or impossible for visualizing and understanding turbulent flows. (32,33,34,35,36,2,9) Therefore, we may quickly and cheaply investigate the behavior of flow-over spillways using the tool provided by the numerical model. The numerical model can display the flow process with the equation and the proper coefficient for analytical solutions under various conditions.…”

Section: Flow Pattern Modeling With Numerical Modelsmentioning

confidence: 99%

Flow Patterns Modeling over Spillway: Review Study

Ibrahim,

Kamel

2024

Salud, Ciencia y Tecnología - Serie de Conferencias

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A spillway dam, constructed concurrently with concrete or masonry, is a vital infrastructure designed to provide the controlled release of surplus water that surpasses the dam's storage capacity. Since the Ogee spillway is among the best and most well-known worldwide, it deserves study. Weir flow, inertia, and gravity are crucial in many open-channel applications. Consequently, hydraulic performance data between model and prototype structures are commonly scaled using Froude similitude. As the upstream head decreases in a weir flow, the surface tension and viscosity forces become more important, perhaps to the point where Froude scaling fails to achieve complete model-prototype similarity. Size-scale effects are responsible for various alterations to the head-discharge connection, the nappe trajectory, and air entrainment. Hydraulic parameters were explored in this work utilizing Flow3D software to find weir geometry optimization using the CFD method. In addition, this study attempted to evaluate flow on various parts of crested weirs in three different models.

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“…Other than that, this experiment compares the result between experimental result, theoretical result, and of course the regression and numerical result. Al-Qadami et al [14] show the numerical modelling for triangular hump weir whereas Daneshfaraz et al [15] were studying the numerical modelling for the sloped broad crested weir. A comparison between the result of the flow characteristics of this study and the aforementioned studies will be done.…”

Section: Figure 1 Cipolletti (Trapezoidal Weir)mentioning

confidence: 99%

Flow Characteristics Investigation On Trapezoidal Weir Using FLOW 3D

Setyandito

Novandy

Juliastuti

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Weir is a building that is formed to change the nature of river flow to accommodate irrigation needs. The main purpose of a weir is to raise the river water level, drain the channel through the intake channel, allow water to be tapped, control all flow, etc. If a flow experiences a large shock, it will cause a hydraulic jump resulting in a transition of flow from supercritical to subcritical. The analysis can be performed, it was done using the Computational Fluids Dynamics (CFD) software, FLOW-3D. To model the 3-D weir used in this FLOW-3d, AutoCAD is used and finally, Flow Sight will be used to display visualization results such as graphics and videos. This paper investigates the Froude number and depth-averaged velocity on the trapezoidal weir. Moreover, the numerical modelling of trapezoidal weirs has been compared with the experimental result and numerical modelling of other types of weirs. The results show that the Froude number is proportional to the average velocity of this depth because the Froude number increases with the increase in the average velocity. There is a difference with the flow that flows after the weir, in a trapezoidal weir the Froude number decrease slightly but after that, it increases again downstream.

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Numerical modelling of flow characteristics over sharp crested triangular hump

Cited by 20 publications

References 11 publications

Impact and Mitigation Strategies for Flash Floods Occurrence towards Vehicle Instabilities

Impact and Mitigation Strategies for Flash Floods Occurrence towards Vehicle Instabilities

Flow Patterns Modeling over Spillway: Review Study

Flow Characteristics Investigation On Trapezoidal Weir Using FLOW 3D

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