期刊
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
卷 33, 期 9, 页码 3202-3227出版社
EMERALD GROUP PUBLISHING LTD
DOI: 10.1108/HFF-02-2023-0056
关键词
Natural convection; Porous two-sided wavy cavity; Hybrid nanofluid; Magnetic field; Chemical reaction
The purpose of this study is to investigate the natural convection characteristics of a reacting hybrid nanofluid in an open porous cavity bounded by vertical wavy walls subject to an inclined magnetic field. The resulting equations are solved using finite difference method and numerical results for the streamlines, isotherms and isoconcentration are obtained. The findings reveal the flow patterns and distribution of temperature and concentration in the open space.
PurposeThe purpose of this study is to investigate the natural convection characteristics of a reacting hybrid nanofluid in an open porous cavity bounded by vertical wavy walls subject to an inclined magnetic field. Design/methodology/approachThe physical domain of the problem is constructed using coordinate transformations, and the equations are transformed accordingly. The resulting equations are then solved using finite difference method. Numerical results for the streamlines, isotherms and isoconcentration are illustrated with varying relevant parameters. FindingsWhatever the values of parameters, streamlines have two counter-rotating cells, and their intensities are the highest near the open end. Moreover, the maximum temperature and the minimum concentration are obtained in close proximity to the open end. The strength of streamlines is increased with increasing Rayleigh number, Frank-Kamenetskii number and Darcy number, whereas it is decreased with the increment of volume fractions of nanoparticles. Research limitations/implicationsThe limitations of this study are that the model is suitable for thermal equilibrium cases and constant thermo-physical properties, while the results can predict two-dimensional flow behaviors. Originality/valueTo the best of the authors' knowledge, there is no study on the natural convection induced by a chemical reaction in an open cavity bounded by vertical wavy walls. The findings might be used to gather knowledge about the flow, energy and reactant distributions in an open space containing a chemical reaction.
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