Numerical Simulation of Flow in Parshall Flume Using Selected Nonlinear Turbulence Models

Heyrani, Mehdi; Mohammadian, Abdolmajid; Nistor, Ioan

doi:10.3390/hydrology8040151

Cited by 4 publications

(12 citation statements)

References 17 publications

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“…Application of non-linear models by Ref. [7] shows promising results with the least error possible in comparison to the linear methods that are used by other scholars in different studies. Additionally, the VOF method to determine the water surface level is implemented by the majority of the researchers [7,8,11,19,[22][23][24][25].…”

Section: Discussionmentioning

confidence: 92%

“…Among the researchers, Refs. [7,16,19,[21][22][23], the K − ε turbulent model, both the standard and RNG versions, are implemented the most. It has been applied to the standard Parshall flume, cutthroat and short-throat flumes.…”

Section: Discussionmentioning

confidence: 99%

“…In an overview of the numerical articles that implement the computational fluid dynamic software, using the three-dimensional modeling is observed in few articles [7,8,11,23,25]. The possibility of generating a 3-D mesh and solving the flow equation in three-dimensional modeling is due to the advancement of the computer processors within the past decades.…”

Section: Discussionmentioning

confidence: 99%

“…Post-processing involves the use of other software to interpret the results from the previous stage. Paraview, for example, [7,8] is used to plot the numerical results. As an example, it uses the streamline and contour type of plots beside the slice and threshold functions.…”

Section: Numerical Modeling In Cfdmentioning

confidence: 99%

“…The implementation of nonlinear turbulence models in OpenFOAM was pursued by Ref. [7] in conjunction with their previous comprehensive study on 7 linear turbulence models. Three different turbulence models, i.e., Shih et al (1998) [13] Quadratic k − ε Model (SQ), Lien, 1996 [14] Cubic Turbulence Model (LC) and v 2 − f , from the RANS family were selected to simulate the flow in a modified 3-in Parshall flume.…”

Section: Literature Review 41 Numerical Studiesmentioning

confidence: 99%

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Application of Numerical and Experimental Modeling to Improve the Efficiency of Parshall Flumes: A Review of the State-of-the-Art

et al. 2022

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One of the primary steps in managing the flow in an open channel is determining its properties. Empirical equations are developed to provide further information regarding the flow in open channels. Obtaining such experimental equations is expensive and time consuming; therefore, alternative solutions have been sought. Over the last century, the Parshall flume, a static measuring device with no moving parts, has played a significant role in measuring the flow in open channels. Many researchers have focused their interest on studying the application of Parshall flumes in various fields like irrigation and wastewater management. Although various scholars used experimental results to enhance the rating equation of the Parshall flume, others used an alternative source of data to recalibrate the height–discharge relation equation using numerical simulation. Computational Fluid Dynamic (CFD) software is becoming popular nowadays as computing hardware has advanced significantly within the last few decades, making it possible to go beyond the limited resolution that was experienced in the past. Multiple CFD models, depending on their availability, either open-source or commercially licensed, have been used to perform numerical simulations on different configurations of flumes, especially Parshall flumes, to produce water level results. Regarding various CFD tools that have been used, i.e., FLOW-3D, Ansys Fluent, or OpenFOAM, after precise calibration with experimental data, it has been determined that the output is reliable and can be implemented to the actual scenarios. The benefit of using this technique to produce results is the ability of the CFD approach to adjust the initial conditions, like flow velocity or structural geometry, where necessary. With respect to channel size and the condition of the site where the flume is located, the choices are narrowed to the specific Parshall flume suitable to the situation. It is not always possible to select the standard Parshall flume; therefore, engineers provide some modification to the closest flume size and provide a new rating curve to produce accurate flowrates. This review has been performed on the works of a number of scholars who targeted the application of numerical simulation and physical experimental data in Parshall flumes to either enhance the existing rating equation or propose further modification to the structure’s geometry.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Numerical Modeling In Cfdmentioning

confidence: 99%

Section: Literature Review 41 Numerical Studiesmentioning

confidence: 99%

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Application of Numerical and Experimental Modeling to Improve the Efficiency of Parshall Flumes: A Review of the State-of-the-Art

et al. 2022

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OpenFOAM reduced channel modeling análisis

Lara Pérez,

Nova Burgos,

Montenegro Carrillo

et al. 2023

ing. Solidar

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Introduction: The article is a product of the research “Analysis of open channel models with reduction in Openfoam” developed at Universidad Santo Tomás in 2022 integrating computational fluid dynamics (cfd), in an open channel with reduction of multiphase, isotropic, isothermal, turbulent and steady state flow. Problem: Drinking water supply requires efficient treatment, and to achieve this, the hydrodynamic and physicochemical processes of the treatment plant units must be known in detail. Simulation is used to reduce costs and to perform multiple experiments. A robust hydraulic parameter readout system increases the reliability of modeling [1]. The larger source of experimental data leads to a more reliable model. Objective: Familiarize the reader with the tools for learning and optimization of conventional treatment systems for human water supply. Research also contributes to ensuring environmental sustainability and reducing the proportion of people without sustainable access to water and sanitation services, especially in rural areas where lack of water infrastructure is a prevalent problem. Method: Simulation of complex turbulence models by means of energy, mass and momentum conservation equations by means of Openfoam solvers. Results: There is a convergence since time 5952, since after this time most of the residual limit values are in the order of 10-3 and 10-4, and taking into account the state of the art which states that the solution has converged if the residual is in the order of these values Conclusions: A contribution has been made to the knowledge of computational fluid dynamics, generating an approach to the modeling of channels to the students of the civil engineering faculty of the Santo Tomas University, for advances in future research, thus strengthening in an institutional way the use of Openfoam for the modeling of complex problems in water transport systems.

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Experimental Establishing of Moving Hydraulic Jump in a Trapezoidal Channel

et al. 2023

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This research was prepared as a preliminary laboratory study to achieve a moving hydraulic jump with controlled discharges. It is an initial part of the study that is being prepared to treat the salt tide occurring in the Shatt al-Arab due to the lack of water imports that were coming from the Karun and Karkheh rivers from Iranian territory, as this scarcity caused a salt tide that affected significantly the environmental reality of the city of Basra and the agricultural lands surrounding the Shatt al-Arab, such as the Shatt al-Arab district and the Siba orchards. As part of the proposed solutions, a moving hydraulic jump is created that pushes the salt tongue into the Persian Gulf; the results were promising. A moving hydraulic leap is a good example of unstable super- and sub-critical flow regimes and is regarded as a specific case of unsteady flow in a channel. There aren't many published experiments on this particular flow type, and the quantitative simulation of such a flow state has some inherent complexity. An experimental setup was created for this work in order to assess the hydraulic performance of a moving hydraulic jump in a trapezoidal flume. A sluice gate was installed at the flume's upstream edge to provide an unstable supercritical flow regime, movable hydraulic jumps along the channel, and temporal water stages at the gate's upstream side for the various downstream end boundary situations. Several flow factors, including energy head, pressure head, and flow depth, were estimated from the recorded data. The study found connections between discharge and shifting hydraulic jump variables. By employing relatively stable momentum and energy formulas, simple and time-independent formulas were developed that accurately predicted the pressure head in the subcritical region of an unstable mixed flow. As a result, the moving hydraulic jump factor can be correctly predicted using time-independent correlations by using the discharge variation as a boundary scenario. Doi: 10.28991/CEJ-2023-09-04-08 Full Text: PDF

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Numerical Simulation of Flow in Parshall Flume Using Selected Nonlinear Turbulence Models

Cited by 4 publications

References 17 publications

Application of Numerical and Experimental Modeling to Improve the Efficiency of Parshall Flumes: A Review of the State-of-the-Art

Application of Numerical and Experimental Modeling to Improve the Efficiency of Parshall Flumes: A Review of the State-of-the-Art

OpenFOAM reduced channel modeling análisis

Experimental Establishing of Moving Hydraulic Jump in a Trapezoidal Channel

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