Numerical study on combined thermal radiation and magnetic field effects on entropy generation in unsteady fluid flow past an inclined cylinder

被引:23
作者
Mburu, Zachariah Mbugua [1 ]
Mondal, Sabyasachi [2 ]
Sibanda, Precious [1 ]
机构
[1] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Private Bag X01, ZA-3209 Pietermaritzburg, South Africa
[2] Amity Univ Kolkata, Dept Math, Kolkata 700135, W Bengal, India
关键词
numerical analysis; entropy generation; overlapping grid spectral collocation method; nanofluid; heat transfer; CONVECTION NANOFLUID FLOW; STRETCHING SHEET; HEAT-TRANSFER; MICROPOLAR FLUID; VERTICAL PLATE; MASS-TRANSFER; MHD FLOW; SURFACE; OPTIMIZATION; VELOCITY;
D O I
10.1093/jcde/qwaa068
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This study reports on combined thermal radiation, chemical reaction, and magnetic field effects on entropy generation in an unsteady nanofluid flow past an inclined cylinder using the Buongiomo model. We consider the impact of viscous dissipation, velocity slip conditions, thermal slip conditions, and the Brownian motion. The transport equations governing the flow are solved using an overlapping grid spectral collocation method. The results indicate that entropy generation is suppressed significantly by thermal radiation and chemical reaction parameters but enhanced with the magnetic field, viscous dissipation, the Brinkman number, and the Reynolds number. Also, fluid flow variables are affected by the thermophoresis parameter, the angle of cylinder inclination, and the Richardson number. We present the findings of the skin friction coefficient, the Nusselt number, and the Sherwood number. The model is applicable in fields such as the petroleum industry, building industries, and medicine.
引用
收藏
页码:149 / 169
页数:21
相关论文
共 40 条
[1]   Analytical modeling of entropy generation for Casson nano-fluid flow induced by a stretching surface [J].
Abolbashari, Mohammad Hossein ;
Freidoonimehr, Navid ;
Nazari, Foad ;
Rashidi, Mohammad Mehdi .
ADVANCED POWDER TECHNOLOGY, 2015, 26 (02) :542-552
[2]   Entropy analysis for an unsteady MHD flow past a stretching permeable surface in nano-fluid [J].
Abolbashari, Mohammad Hossein ;
Freidoonimehr, Navid ;
Nazari, Foad ;
Rashidi, Mohammad Mehdi .
POWDER TECHNOLOGY, 2014, 267 :256-267
[3]   On the heat transport mechanism and entropy generation in a nozzle of liquid rocket engine using ferrofluid: A computational framework [J].
Acharya, Nilankush ;
Das, Kalidas ;
Kundu, Prabir Kumar .
JOURNAL OF COMPUTATIONAL DESIGN AND ENGINEERING, 2019, 6 (04) :739-750
[4]   Magnetic field effects on forced convection flow of a hybrid nanofluid in a cylinder filled with porous media: a numerical study [J].
Aminian, Ehsan ;
Moghadasi, Hesam ;
Saffari, Hamid .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2020, 141 (05) :2019-2031
[5]  
[Anonymous], 2000, Spectral Methods in MATLAB
[6]   Unsteady radiative stagnation point flow of MHD carreau nanofluid over expanding/contracting cylinder [J].
Azam, M. ;
Khan, M. ;
Alshomrani, A. S. .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2017, 130 :64-73
[7]   Prediction of entropy generation for nanofluid flow through a triangular minichannel using neural network [J].
Bahiraei, Mehdi ;
Majd, Shakiba Mohammadi .
ADVANCED POWDER TECHNOLOGY, 2016, 27 (02) :673-683
[8]   Fundamentals of exergy analysis, entropy generation minimization, and the generation of flow architecture [J].
Bejan, A .
INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 2002, 26 (07) :545-565
[9]  
Bejan A., 1982, ENTROPY GENERATION H
[10]  
Bellman R. E., 1965, QUASILINEARIZATION N