基于 SQLM 的化学反应型杰弗里纳米流体与非均匀热源/散热器在拉伸片上的 MHD 辐射粘滞-耗散传热的熵生成分析

IF 2.7 Q3 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanofluids Pub Date : 2023-10-01 DOI:10.1166/jon.2023.2096
D. Pal, S. Mondal
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引用次数: 0

摘要

我们研究了熵生成和非线性热辐射对杰弗里纳米流体在具有粘性-欧姆耗散和非均匀热源/散热的可渗透拉伸片上的磁流体动力学(MHD)的影响。布朗运动和热泳效应也被考虑在内。边界层流动的基本控制方程采用频谱准线性化方法(SQLM)进行数值求解。各种控制物理参数对速度、温度、浓度、熵生成和贝扬数剖面的影响以图表形式呈现。结果表明,增加磁参数、布朗运动参数和热泳参数会增强温度曲线。此外,熵生成曲线随着空间相关参数和温度相关参数、壁面质量通量参数以及靠近薄片的化学反应参数的增加而增加。相反,在远离薄片的地方则出现了相反的趋势。熵生成的新颖性还反映了几个相关物理参数对熵生成率和贝扬数的影响。
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Analysis of Entropy Generation on MHD Radiative Viscous-Ohmic Dissipative Heat Transfer Over a Stretching Sheet in a Chemically Reactive Jeffrey Nanofluid with Non-Uniform Heat Source/Sink Based on SQLM
We have examined the effect of entropy generation and nonlinear thermal radiation on magnetohydrodynamic (MHD) in Jeffrey nanofluid over a permeable stretching sheet with viscous-Ohmic dissipation and non-uniform heat source/sink. Brownian motion and thermophoresis effects have also been taken into account. The basic governing equations of the boundary layer flow are then solved numerically by the Spectral Quasilinearization method (SQLM). Various controlling physical parameters effects on velocity, temperature, concentration, entropy generation and Bejan number profiles are presented graphically. Results show that increasing the magnetic parameter, Brownian motion parameter, and thermophoresis parameter enhance the temperature profiles. Furthermore, the entropy generation profiles increase with space-dependent and temperature-dependent parameters, wall mass flux parameter, and chemical reaction parameter near to the sheet. In contrast, reverse trends are observed away from the sheet. Novelty of entropy generation is also provided to reflect the effects of several relevant physical parameters on the entropy generation rate and Bejan number.
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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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