纳米流体饱和多孔介质中Darcy对流的内部热调制

IF 2.7 Q3 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanofluids Pub Date : 2023-04-01 DOI:10.1166/jon.2023.1959
P. Kiran, S. H. Manjula
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引用次数: 1

摘要

在本文中,我们研究了内部热调制对纳米流体饱和多孔介质的影响。我们考虑了随时间变化的热源的微小变化,并随慢时间呈正弦变化。通过添加与时间相关的内部热源,可以改变能量方程。这种内部热源有其时间相关和独立的部分。时间相关部分显示了多孔介质上的内部热调制,并定义了对层中热/质量传递的控制。我们进行了非线性稳定性分析,以研究系统中的热/质量传递。将非线性偏微分方程组在二项相似变换下转化为非线性常微分方程。该系统具有不同的系统参数,并对它们的传热和传质进行了图形化研究。稳定或不稳定的双重性质是由于系统内部加热调制的显著影响。此外,内部加热的影响是使系统不稳定,因此热/质量传递增强。研究发现,内部加热调制可以有效地调节系统中的传热/传质。
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Internal Heat Modulation on Darcy Convection in a Porous Media Saturated by Nanofluid
In this paper we investigate the effect of internal heat modulation over a nanofluid saturated porous medium. We consider a small variation in time dependant heat source and vary sinusoidally with slow time. An energy equation will be altered by adding time dependant internal heat source. This internal heat source has its time dependent and independent parts. Time dependent part shows that the internal heat modulation over a porous media and defines controls on heat/mass transfer in the layer. We have performed a nonlinear stability analysis to investigate heat/mass transfer in the system. The nonlinear system of partial differential equations are transformed into nonlinear ordinary differential equations under similarity transforms up to the second term. This system has different system parameters and they have been investigated on heat and mass transfer graphically. The dual nature, stabilize or destabilize is due to the significant effect of internal heating modulation of the system. Further, the effect of internal heating is to destabilize the system, as a consequence heat/mass transfer enhances. It is found that internal heating modulation can be used effectively to regulate heat/mass transfer in the system.
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来源期刊
Journal of Nanofluids
Journal of Nanofluids NANOSCIENCE & NANOTECHNOLOGY-
自引率
14.60%
发文量
89
期刊介绍: Journal of Nanofluids (JON) is an international multidisciplinary peer-reviewed journal covering a wide range of research topics in the field of nanofluids and fluid science. It is an ideal and unique reference source for scientists and engineers working in this important and emerging research field of science, engineering and technology. The journal publishes full research papers, review articles with author''s photo and short biography, and communications of important new findings encompassing the fundamental and applied research in all aspects of science and engineering of nanofluids and fluid science related developing technologies.
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