Thermal behavior of transient EMHD flow in a rotating microscale conduit with surface undulation

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-03-26 DOI:10.1016/j.tsep.2025.103521

Amalendu Rana

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引用次数: 0

Abstract

Microchannels with undulating surfaces are instrumental in boosting mixing efficiency, augmenting thermal performance, and enhancing chemical reactions within electrically actuated microfluidic systems. The rotation of microchannel with surface undulation further amplifies this enhancement. Owing to this motivation, the combined effects of the magnetohydrodynamics and surface undulation on transient rotating electrothermal flow in microchannels are investigated. A mathematical model is developed, followed by the derivation of analytical solutions using the separation of variables method combined with cosine Fourier series expansion. Our results indicated that the interplay between the undulation of the surface and rotation significantly influences the boundary layer formation for shaping the flow dynamics. Over time, viscosity and force redistribution lead to a more stable flow with diminished disturbances near the central axis of the channel. Rotation and other forces directly influence the heat transfer characteristics, leading to flow oscillations. These oscillations boost mixing and enhance efficient thermal energy transport.

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.