Numerical simulation of the hydrodynamics and turbulent mixing process in a drinking water storage tank

Moncho-Esteve, Ignacio José; Palau-Salvador, Guillermo; Brevis, Wernher; Vaas, Markus; Jiménez, Petra Amparo López

doi:10.1080/00221686.2014.989456

Cited by 10 publications

(3 citation statements)

References 17 publications

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“…Positioning a subsurface berm or an island close to the reservoir the inlet was found to reduce short-circuiting and increase the effective reservoir volume. Based on 3D computational fluid dynamics (CFD), Moncho-Esteve et al [49], Xavier & Janzen [48] and Sonnenwald et al [50] simulated the RTD at the outlet of reservoirs to analyse the effects of various design factors such as the inlet orientation and the presence of vegetation.…”

Section: Time Scales In Shallow Reservoirsmentioning

confidence: 99%

What does the volume-averaged water age distribution function reveal about flow fields in rectangular shallow reservoirs?

Dewals,

Archambeau,

Erpicum

et al. 2024

Environ Fluid Mech

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Shallow reservoirs are hydraulic structures widely used for water storage or as sedimentation tanks. Their design and sizing are intricate due to the complex flow fields developing in such structures, hence suitable indicators are needed to evaluate their hydraulic performance. Based on the outcomes of a depth-averaged computational model, we analysed the potential of the distribution function of the volume-averaged water age to unveil in a concise way valuable information on the flow field in rectangular shallow reservoirs. Ten different reservoir layouts were examined. In all cases, the shape of the computed distribution function reveals a remarkable amount of information on the flow field in the reservoirs. The distribution functions exhibit a sequence of steps, followed by an exponential decay, which may be related to fast and slow pathways travelled by water particles along their routes across the reservoirs. As such, the distribution function of the volume-averaged water age was found to provide valuable information for assessing the hydraulic performance of shallow reservoirs, while achieving an effective reduction in the problem dimensionality.

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Section: Time Scales In Shallow Reservoirsmentioning

confidence: 99%

What does the volume-averaged water age distribution function reveal about flow fields in rectangular shallow reservoirs?

Dewals,

Archambeau,

Erpicum

et al. 2024

Environ Fluid Mech

View full text Add to dashboard Cite

show abstract

“…However, their solution to problems with complex geometries and boundary conditions required the development of efficient numerical solution techniques and the ability to implement these techniques on computers. The development of both numerical techniques and digital machines with increased computational power allowed for the wide application of CFD methods to many areas of fluid dynamics during the last few decades, including water and wastewater engineering [20,17,33,24,14,22,35,41,40,12,49,42,16,38,26,30] . Recently, CFD methods were also applied to study flows inside anaerobic digesters.…”

Section: Traditional Approaches Versus Cfd In the Study Of Anaerobic mentioning

confidence: 99%

Application of CFD methods to an anaerobic digester: The case of Ontinyent WWTP, Valencia, Spain

Jiménez

Escudero-González

Martínez

et al. 2015

Journal of Water Process Engineering

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“…K. Hanjalik [41] used the k-ε model over other types of turbulence models for simulation in pressure pipes with high Reynolds numbers, with the same empirical constants. Furthermore, RANS k-ε models have proposed good results also in mixing and concentration analysis, when these models have been validated with measurements, as in [42,43].…”

Section: Turbulent Flowmentioning

confidence: 99%

Validation of a Computational Fluid Dynamics Model for a Novel Residence Time Distribution Analysis in Mixing at Cross-Junctions

Cervantes

Delgado-Galván

Nava

et al. 2018

Water

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Abstract:In Water Distribution Networks, the chlorine control is feasible with the use of water quality simulation codes. EPANET is a broad domain software and several commercial computer software packages base their models on its methodology. However, EPANET assumes that the solute mixing at cross-junctions is "complete and instantaneous". Several authors have questioned this model. In this paper, experimental tests are developed while using Copper Sulphate as tracer at different operating conditions, like those of real water distribution networks, in order to obtain the Residence Time Distribution and its behavior in the mixing as a novel analysis for the cross-junctions. Validation tests are developed in Computational Fluid Dynamics, following the k-ε turbulence model. It is verified that the mixing phenomenon is dominated by convection, analyzing variation of Turbulent Schmidt Number vs. experimental tests. Having more accurate mixing models will improve the water quality simulations to have an appropriate control for chlorine and possible contaminants in water distribution networks.

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Numerical simulation of the hydrodynamics and turbulent mixing process in a drinking water storage tank

Abstract: Moncho Esteve, IJ.; Palau-Salvador, G.; Brevis, W.; Vaas, M.; López Jiménez, PA. (2015). Numerical simulation of the hydrodynamics and turbulent mixing process in a drinking water storage tank. Journal of Hydraulic Research. 52 (2)

Cited by 10 publications

References 17 publications

What does the volume-averaged water age distribution function reveal about flow fields in rectangular shallow reservoirs?

What does the volume-averaged water age distribution function reveal about flow fields in rectangular shallow reservoirs?

Application of CFD methods to an anaerobic digester: The case of Ontinyent WWTP, Valencia, Spain

Validation of a Computational Fluid Dynamics Model for a Novel Residence Time Distribution Analysis in Mixing at Cross-Junctions

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