Discharge Characteristics of Triangular Weir with Upstream Ramp and Its CFD Modelling Using Ansys CFX Module

Kadia, Subhojit; Kumar, Binit; Ahmad, Z.

doi:10.1007/978-3-030-37105-0_7

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…The CFD simulations were carried out using CFX solver which requires less computational cost and space than Fluent solver due to a lesser number of degrees of freedom (Berggren et al 2009;Kadia et al 2020). The widely used standard k-ε turbulent model (an eddy-viscosity model) which was introduced by Spalding (1972, 1974) was used in the present simulation.…”

Section: Cfd Simulationmentioning

confidence: 99%

“…The widely used standard k-ε turbulent model (an eddy-viscosity model) which was introduced by Spalding (1972, 1974) was used in the present simulation. The simulation was carried out at a discharge of 19.7 × 10 -3 m 3 /s for all three PKW models following the method available in the literature (Kadia et al 2020). A 1.5 m long domain having cross-sections 0.39 m × 0.335 m in the downstream side and 0.39 m × 0.3 m in the upstream side was modeled.…”

Section: Cfd Simulationmentioning

confidence: 99%

See 1 more Smart Citation

Sediment Movement over Type A Piano Key Weirs

Kumar

Kadia

Ahmad

2021

J. Irrig. Drain Eng.

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This investigation deals with the mechanics of movement of singular quartz gravel and coarse sand river bed particles in upstream and over inlet key of three type-A Piano key weir (PKW) models, which were recorded with a high-speed camera. Acoustic-Doppler-Velocimeter was used to obtain the upstream bed shear stress. The sediment threshold and regime over the upstream bed were compared with the previous investigations and found to be within the ranges. Generally, a sediment particle decelerates as it approaches the inlet key, but accelerates over it due to flow contraction and an increase in shear stress.Rolling and saltation regimes were observed over the key. The maximum particle velocity at the key end was higher in case of 1-cycle model than 2-cycles than 3-cycles. CFD simulation shows a rapid increase in shear stress at the key end. For the used models, PKW required 17%-43% of additional shear stress on the upstream bed to pass sediment over the key. This study is useful for the in-channel application of PKW and sediment flushing over it.

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Section: Cfd Simulationmentioning

confidence: 99%

Section: Cfd Simulationmentioning

confidence: 99%

Sediment Movement over Type A Piano Key Weirs

Kumar

Kadia

Ahmad

2021

J. Irrig. Drain Eng.

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“…In another study, modeling of flow and sediment transport in a novel vortex-style stormwater retention pond was carried out by utilizing computational and physical approaches (Ahadi et al 2020). Kadia et al (2020) studied numerical modeling considering high sediment content in a hydraulic turbine in two-phase flow, and wear prediction was also carried out. However, Jodeau et al (2018) carried out a numerical simulation based on turbidity currents using ANSYS CFX and Telemac 3D.…”

Section: Experimental Modelingmentioning

confidence: 99%

A Comprehensive Review on Sediment Transport, Flow Dynamics, and Hazards in Steep Channels

Mir,

Patel

2024

JWMM

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The hydrological channel networks of the steep mountains are extensively designated and organized geographic systems and are very complicated. They are composed of granular beds that are uneven and are subjected to fluid forces that fluctuate spatially and temporally. The flow and movement of sediment in these streams are significantly shaped by large rocks such as boulders. However, it is difficult to comprehend these mountain streams because significant information is unavailable regarding these channels as compared to plane bed streams. To address this issue, a critical review of the numerical, computational fluid dynamics, and machine learning mechanisms underlying sediment transport across different flow conditions in steep channels is presented while considering the current and foreseeable conditions for various sediment transport phenomena. The present study emphasized to carry out further analysis on these steep channels using advanced available techniques to get an insight into the morphology of these channels. Furthermore, the hazards associated with steep mountain channels are reviewed as they have a significant impact on infrastructure and habitation in mountainous regions.

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