A two-phase flow model for hydrogen evolution in an electrochemical cell

Mat, Mahmut D.; Aldaş, Kemal; Ilegbusi, Olusegun J.

doi:10.1016/j.ijhydene.2003.11.007

Cited by 71 publications

(58 citation statements)

References 22 publications

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“…The same model was also implemented by Mat et al [5], who solved the ionic species transport as well in order to derive the tertiary current density distribution within the simulation domain. In ref.…”

Section: Overview Of Electrolyser Modelling Approachesmentioning

confidence: 99%

“…[4], where the current density is assumed to be constant at the electrode surfaces, nor in ref. [5]. The simulation domain is generally two-dimensional and often reduced to single fluid zone.…”

Section: Overview Of Electrolyser Modelling Approachesmentioning

confidence: 99%

“…(6) represent the interphase interactions, where Kji is computed according to the Schiller and Naumann model for the drag coefficient, as in ref. [5], and Qji using the default FLUENT assumptions.…”

Section: Governing Equationsmentioning

confidence: 99%

“…2): i) vertical gas-evolving electrode, like in prior work [3][4][5]7], ii) gravity vector oriented downward in x-direction, which is the configuration of the pilot facility, and iii) horizontal cathode facing upward. They are referred to as g z , g x and g y respectively.…”

Section: Parameter Studymentioning

confidence: 99%

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Hydrogen production by the Westinghouse cycle: modelling and optimization of the two-phase electrolysis cell

Charton¹,

Rivalier²,

Ode³

et al. 2009

Simulation of Electrochemical Processes III

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Hydrogen is currently viewed as a promising energy carrier for transportation applications. In this context, mass production of hydrogen is a major issue for the coming decades. Among the viable production processes, the hybrid sulphur cycle, or Westinghouse cycle, is studied by the Nuclear Energy Division of the French CEA. In this work, the influence of H 2 bubbles on the current distribution within the electrolyser is studied. Turbulent two-phase flow simulations are performed with Ansys-Fluent CFD code in the 3D calculation domain using an Euler-Euler model. The electrokinetic problem is solved in the same domain by a finite element code, Flux-Expert, which is able to compute the secondary current distribution by means of specific interfacial elements. Parameters including the cell orientation (vertical or horizontal electrode), flow regime and bubble size are investigated, and the current model development status and needs are discussed.

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Section: Overview Of Electrolyser Modelling Approachesmentioning

confidence: 99%

Section: Overview Of Electrolyser Modelling Approachesmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

Section: Parameter Studymentioning

confidence: 99%

See 2 more Smart Citations

Hydrogen production by the Westinghouse cycle: modelling and optimization of the two-phase electrolysis cell

Charton¹,

Rivalier²,

Ode³

et al. 2009

Simulation of Electrochemical Processes III

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“…Thus, every advance in optimization and improvement of these processes can lead to significant energy conservation and cost reduction. This provides the motivation for many experimental [1][2][3] and theoretical [4][5][6] studies in the field. In many cases (e.g., chlorate production, hypochlorite generation, or perchlorate electrolysis) the industrial scale electrochemical cell consists of a series of channels immersed in a bath of electrolyte.…”

Section: Introductionmentioning

confidence: 99%

The Flow Pattern in Single and Multiple Submerged Channels with Gas Evolution at the Electrodes

Alexiadis

Duduković

Ramachandran

et al. 2012

International Journal of Chemical Engineering

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We show that the gas-liquid flow pattern in a single gas-evolving electrochemical channel can be remarkably different from the flow pattern in multiple submerged gas-evolving electrochemical channels. This is due to the fact that in a single channel there is a higher accumulation of small bubbles and these can considerably affect the liquid velocity pattern which in turn may affect the performance of a cell. Since experimental work is often carried out in single channels, while industrial applications almost always involve multiple channels, this study provides insight into the factors that affect the flow pattern in each situation and establishes the basis for relating the behavior of single-and multiple-channel devices.

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