https://doi.org/10.1140/epjp/s13360-024-05504-5
Regular Article
Impact of vertical thermal vibration on heat transfer dynamics in a dual-channel-driven cavity under zero-gravity condition
1
Department of Mathematics, Bharathiar University, 641 046, Coimbatore, Tamil Nadu, India
2
School of Mechanical Engineering, Kyungpook National University, 41566, Daegu, Republic of Korea
Received:
1
July
2024
Accepted:
25
July
2024
Published online:
7
August
2024
This study investigates the thermal convection phenomena in a square cavity driven by dual ventilation channels under the influence of high-frequency, low-amplitude vertical thermal vibration, focusing on a ternary hybrid nanofluid (THNF). By analyzing the interactions between thermal vibration-induced convection, dual-channel flow configurations, and nanofluid characteristics, the research provides novel insights into heat transfer dynamics in zero-gravity environments. Governing equations were derived from averaged formulations depicting thermovibrational convection (TVC), elucidated through vorticity of mean velocity and stream functions pertaining to both mean and fluctuating flows. The influence of vibration is quantified using the dimensionless Gershuni number (
), with computations conducted at fixed Prandtl number (
). Numerical simulations explore the effects of physical parameters such as Reynolds number (
), Gershuni number (
), and volume fraction of nanomaterials (
) on fluid behavior and heat transfer efficiency particularly under opposed and assisted flow scenarios. Notably, our numerical findings indicate that the heat transfer rate in opposed flow exceeds that of assisted flow by 21% at 
and by 60% at 
, highlighting its superior heat transfer potential. We also observed a 10% improvement in heat transfer efficiency, with the mean Nusselt number for THNF rising from 2.8638 (water) to 3.1634 at a 4% nanomaterial volume fraction. However, higher vibration parameters made the temperature distribution less uniform, reducing heat transfer efficiency despite increased fluid circulation.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
