Hydrodynamically enhanced electrochemical mass transfer on the surface of an electrically conductive droplet

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU140732" target="_blank" >RIV/00216305:26210/21:PU140732 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/content/pdf/10.1007/s00231-021-03071-4.pdf" target="_blank" >https://link.springer.com/content/pdf/10.1007/s00231-021-03071-4.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00231-021-03071-4" target="_blank" >10.1007/s00231-021-03071-4</a>

Result language

angličtina

Original language name

Hydrodynamically enhanced electrochemical mass transfer on the surface of an electrically conductive droplet

Original language description

A fully coupled model is proposed to investigate the influence of flow on electrochemical mass transfer at the interface between the electrolyte and an electrically conductive droplet. The electric current flows through the droplet, and consequently the droplet acts as both anode and cathode. Computations of flow, concentration of reactant, and electric current density fields were carried out. Various droplet sizes (0.5, 2, 4 mm) under different flow regimes considering Reynolds number (Re = 0.2, 2, 20, 40 and 80) were investigated. An iterative numerical method is proposed to determine the concentration of reactant and electric current density at droplet-electrolyte interface considering the reaction kinetics (Butler-Volmer) formula and the diffusion-advection of the reactant through the hydrodynamic boundary layer around the droplet. With the increase of Reynolds number, the amount of electric current density which flows through the droplet increases. It is found that the mass transfer at droplet-electrolyte interface is controlled by reaction kinetics for the small droplet (0.5 mm). However, the diffusion of the reactant governs the efficiency of mass transfer with the increase of the droplet size (2 and 4 mm). With the increase of Reynolds number, the anodic area on the surface of droplet is enlarged.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20303 - Thermodynamics

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

HEAT AND MASS TRANSFER

ISSN

0947-7411

e-ISSN

1432-1181

Volume of the periodical

57

Issue of the periodical within the volume

7

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

1-9

UT code for WoS article

000638495300001

EID of the result in the Scopus database

2-s2.0-85104149657