MHD Flow and Heat Transfer of CNT Nanofluids in Porous Channels with Arrhenius Activation and Variable Viscosity

MHD Flow and Heat Transfer of CNT Nanofluids in Porous Channels with Arrhenius Activation and Variable Viscosity | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 21 January 2026 V1 Latest version Share on MHD Flow and Heat Transfer of CNT Nanofluids in Porous Channels with Arrhenius Activation and Variable Viscosity Authors : Dhana Lakshmi Gandikota and Debnarayan Khatua 0000-0001-7453-9357 [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.176898795.51936890/v1 100 views 89 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The present work numerically investigates two-dimensional magnetohydrodynamic (MHD) steady heat and mass transfer of carbon nanotube (CNT)-based nanofluids flowing through a porous vertical channel in the presence of non-Darcy, thermal radiation, viscous dissipation, internal heat generation, temperature-dependent viscosity, and Arrhenius chemical reaction effects. It was carried out on single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) to compare their transport performance. The transformed governing equations in similarity variables are solved using the Runge-Kutta-Fehlberg (RKF45) shooting method, and the resulting solutions agree very well with the benchmark data. Parametric differences indicated that buoyancy enhanced velocity and thermal transport, whereas the magnetic field and porous resistance slowed momentum transport via the Lorentz and Darcy-Forchheimer effects. The thermal radiation, viscous dissipation, and heat generation led to a substantial rise in temperature, whereas the Schmidt number and reaction rate increased species depletion; an increased activation energy affected the reaction kinetics. Indeed, MWCNT-based nanofluids consistently outperformed SWCNT-based versions, making them suitable for porous heat exchangers, microchannel cooling, and reactive thermal systems. Supplementary Material File (mmac_20_01_26.pdf) Download 5.91 MB Information & Authors Information Version history V1 Version 1 21 January 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords arcy–forchheimer porous channel arrhenius activation energy mhd cnt nanofluid flow swcnt–mwcnt comparative heat transfer variable viscosity and thermal radiation Authors Affiliations Dhana Lakshmi Gandikota Vignan's Foundation for Science Technology and Research (Deemed to be University) View all articles by this author Debnarayan Khatua 0000-0001-7453-9357 [email protected] Parul University View all articles by this author Metrics & Citations Metrics Article Usage 100 views 89 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Dhana Lakshmi Gandikota, Debnarayan Khatua. MHD Flow and Heat Transfer of CNT Nanofluids in Porous Channels with Arrhenius Activation and Variable Viscosity. Authorea . 21 January 2026. 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