Comprehensive analysis of the temperature and velocity behaviours in a second-grade fluid flow in a porous medium

IF 2.1 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Pramana Pub Date : 2025-07-11 DOI:10.1007/s12043-025-02961-0

Y M Gifteena Hingis, M Muthtamilselvan, Ikhyun Kim

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Abstract

This study investigates the free convective flow of a second-grade incompressible viscous fluid through a vertical duct filled with a porous medium, driven by an oscillating pressure gradient parallel to the channel plates. The flow dynamics are influenced by periodic temperature changes on one of the plates and a significant temperature differential between the plates, which introduces a heat source into the system. Additionally, the effect of duct inclination on the convective flow is explored, as the inclination angle modifies buoyancy forces, thus impacting velocity and temperature profiles. The analysis provides insights into how key parameters, such as the heat source intensity, inclination angle and properties of the second-grade fluid, affect the temperature field, phase angles, velocity profiles and heat transfer rates. A comprehensive visual representation illustrates the effects of amplitude of these factors on the thermal and flow characteristics, highlighting the complex interactions between fluid elasticity, porous media resistance and thermal gradients.

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多孔介质中二级流体流动的温度和速度特性综合分析

本文研究了二级不可压缩粘性流体在平行于通道板的振荡压力梯度驱动下，通过充满多孔介质的垂直管道的自由对流流动。流动动力学受到其中一个板的周期性温度变化和板间显著的温差的影响，这将热源引入系统。此外，还探讨了管道倾角对对流流动的影响，因为倾角会改变浮力，从而影响速度和温度分布。通过分析，可以深入了解热源强度、倾角和二级流体性质等关键参数对温度场、相角、速度分布和传热率的影响。综合可视化表示说明了这些因素的振幅对热和流动特性的影响，突出了流体弹性、多孔介质阻力和热梯度之间复杂的相互作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pramana 物理-物理：综合

CiteScore

3.60

自引率

7.10%

发文量

206

审稿时长

3 months

期刊介绍： Pramana - Journal of Physics is a monthly research journal in English published by the Indian Academy of Sciences in collaboration with Indian National Science Academy and Indian Physics Association. The journal publishes refereed papers covering current research in Physics, both original contributions - research papers, brief reports or rapid communications - and invited reviews. Pramana also publishes special issues devoted to advances in specific areas of Physics and proceedings of select high quality conferences.