Advances in bioconvection of Casson nanofluids over a stretching sheet: Influence of thermal radiation and activation energy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F25%3A10258154" target="_blank" >RIV/61989100:27740/25:10258154 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1687850725003103?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1687850725003103?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jrras.2025.101598" target="_blank" >10.1016/j.jrras.2025.101598</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advances in bioconvection of Casson nanofluids over a stretching sheet: Influence of thermal radiation and activation energy

Popis výsledku v původním jazyce

Background: Nanofluids possess enhanced thermal properties, making them highly effective in improving heat transfer performance within thermal systems. Owing to their distinctive thermophysical characteristics, nanofluids have attracted considerable interest across various engineering applications. Purpose: This study investigates the magnetohydrodynamic (MHD) flow of Casson nanofluids over a stretching sheet, accounting for the effects of thermal radiation, activation energy, bioconvection, and motile microorganisms. The roles of Brownian motion and thermophoresis in heat and mass transfer are also analyzed. Method: ology: The governing nonlinear partial differential equations (PDEs) are reduced to a system of nonlinear ordinary differential equations (ODEs) through similarity transformations. These equations, along with the corresponding boundary conditions, are numerically solved using the bvp4c solver in MATLAB. Results: The analysis demonstrates that an increase in the Brownian motion parameter promotes thermal energy diffusion, whereas a higher Lewis number inhibits mass transfer. The Casson fluid parameter reduces the velocity boundary layer thickness, resulting in a 12.4 % rise in shear stress. Additionally, a higher Prandtl number leads to a 21.7 % decrease in thermal boundary layer thickness, thereby enhancing heat dissipation. The thermophoretic parameter exerts a pronounced effect on nanoparticle concentration, yielding a 15.3 % increase in concentration gradients. These results offer valuable insights into optimizing heat and mass transfer in nanofluid-based thermal systems.

Název v anglickém jazyce

Advances in bioconvection of Casson nanofluids over a stretching sheet: Influence of thermal radiation and activation energy

Popis výsledku anglicky

Background: Nanofluids possess enhanced thermal properties, making them highly effective in improving heat transfer performance within thermal systems. Owing to their distinctive thermophysical characteristics, nanofluids have attracted considerable interest across various engineering applications. Purpose: This study investigates the magnetohydrodynamic (MHD) flow of Casson nanofluids over a stretching sheet, accounting for the effects of thermal radiation, activation energy, bioconvection, and motile microorganisms. The roles of Brownian motion and thermophoresis in heat and mass transfer are also analyzed. Method: ology: The governing nonlinear partial differential equations (PDEs) are reduced to a system of nonlinear ordinary differential equations (ODEs) through similarity transformations. These equations, along with the corresponding boundary conditions, are numerically solved using the bvp4c solver in MATLAB. Results: The analysis demonstrates that an increase in the Brownian motion parameter promotes thermal energy diffusion, whereas a higher Lewis number inhibits mass transfer. The Casson fluid parameter reduces the velocity boundary layer thickness, resulting in a 12.4 % rise in shear stress. Additionally, a higher Prandtl number leads to a 21.7 % decrease in thermal boundary layer thickness, thereby enhancing heat dissipation. The thermophoretic parameter exerts a pronounced effect on nanoparticle concentration, yielding a 15.3 % increase in concentration gradients. These results offer valuable insights into optimizing heat and mass transfer in nanofluid-based thermal systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Radiation Research and Applied Sciences

ISSN

1687-8507

e-ISSN

1687-8507

Svazek periodika

18

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

101598

Kód UT WoS článku

001493811600001

EID výsledku v databázi Scopus

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