Mixed convection flow about a solid sphere with a constant surface heat flux embedded in a porous medium filled with a nanofluid

Tham, Leony

doi:10.1063/1.4823922

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…Deswital mengkaji masalah aliran fluida pada pelat horizontal tentang konveksi campuran (Similarity solution for mixed convection boundary layer flow over a permeable horizontal flat plate) [3]. Selain daripada masalah pembentukan lapisan batas yang diselesaikan dengan metoda finite-differenc scheme, terdapat banyak lagi peneliti-peneliti lain mengkaji menggunakan metoda ini antara lain adalah [5], [6], [7], [10], [12], [13], [15] dan [16].…”

Section: Pendahuluanunclassified

Pemodelan Matematika Perpindahan Panas Konveksi Campuran (Mixed Convection) pada Pelat Horizontal

Deswita

2017

JMM

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AbstrakPenelitian ini mengkaji dan menganalisa model matematika perpindahan panas konveksi campuran (mixed convection) pada pelat horizontal. Analisa aliran perpindahan panas ini menggunakan model dalam bentuk sistem persamaan diferensial parsial nonlinear berorde dua yang berdimensi. selanjutnya persamaan ini diturunkan terlebih dahulu ke bentuk persamaan tidak berdimensi, kemudian dirobah ke bentuk sistem persamaan diferensial biasa yang nonlinear, dengan menggunakan similarity transformation. Sistem persamaan diferensial biasa yang nonlinear ini, diselesaikan dengan menggunakan metode finite-difference scheme, juga dengan program Matematika dengan Softwer matlab. Hasil yang didapat dari program ini untuk menentukan koefisien pekali geseran kulit (Skin Friction Coefficient)This study examines and analyzes mathematical model of mixed convection in horizontal plate. The heat transfer uses the model of a two dimensional nonlinear partial differential equations system. Then, this equation is derived first into the dimensionless equation form, and then it is changed into system of nonlinear ordinary differential equations form using similarity transformation. This system of nonlinear ordinary differential equations is solved by using the finite-difference scheme method, also with the mathematics program with software Matlab. The results obtained form this program is to determine skin friction coefficientwall temperature   0  velocity profiles    f  and temperature profiles  .  

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Section: Pendahuluanunclassified

Pemodelan Matematika Perpindahan Panas Konveksi Campuran (Mixed Convection) pada Pelat Horizontal

Deswita

2017

JMM

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“…Chamkha et al [12] carried out the aspect of nanofluid mixed convective flow past a radiate cone in a porous medium. The investigations of nanofluids flow by combined convective past cylinder and sphere saturating porous medium were studied by Nazar et al [13], Tham and Nazar [14], Tham et al [15] and Rashad et al [16]. Tlili et al [17] examined the magneto-nanofluids flow past a porous stretching cylinder with multiple slips and radiation effects.…”

Section: Introductionmentioning

confidence: 99%

Mixed Convective Flow of Micropolar Nanofluid across a Horizontal Cylinder in Saturated Porous Medium

et al. 2019

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The micropolar nanofluids are the potential liquids that enhance the thermophysical features and ability of heat transportation instead of base liquids. Alumina and Titania nanoparticles are mixed in a micropolar fluid. The impact of convective boundary condition is also examined with assisting and opposing flows of both nanofluids. The main objective of this study is to investigate mixed convective flow and heat transfer of micropolar nanofluids across a cylinder in a saturated porous medium. Non-similar variables are used to make the governing equations dimensionless. The local similar and non-similar solutions are obtained by using the Runge-Kutta-Fehlberg method of seventh order. The impacts of various embedded variables on the flow and heat transfer of micropolar nanofluids are investigated and interpreted graphically. It is demonstrated that the skin friction and heat transfer rates depend on solid volume fraction of nanoparticles, Biot number, mixed convection, and material parameters.

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“…They also draw the streamlines and isotherms by taking different parameter into consideration. Tham and Nazar [29] studied steady laminar mixed convection boundary layer flow about the isothermal solid sphere in a porous medium filled with nanofluid for forward and retard flow. Mixed convection parameter 'λ', Nano-particles (Al2O3, Cu, TiO2) and Nanoparticle volume fraction 'φ' are measured for discussions about the effect on skin friction coefficient, boundary layer separation etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Solidification and Remelting over Cryocooled Sphere Using Different Concentrations of Brine Solution as Phase Change Material

Kumar¹,

Biswal²,

Kumar³

2019

IJHT

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In this investigation, the solidification, phase change, melting and heat transfer phenomenon from the outer surface of the solid sphere (stainless steel) having different dimensions were analyzed. Liquid nitrogen has been used to cool the sphere at a cryogenic temperature up to-192 ℃, then dipped the sphere inside a phase change material (brine solution NaCl-H2O of different concentration at ambient temperature) and study the solidification and melting phenomenon. The thickness of ice formation at the outer surface of a sphere is measured for different concentration of brine solution. Variation of ice thickness is also measured for different concentration at different time intervals. It is interesting to note that the time duration of solidification of ice and melting is depending upon the concentration of the solution. Melting behavior of ice is discussed for different concentration.

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Mixed convection flow about a solid sphere with a constant surface heat flux embedded in a porous medium filled with a nanofluid

Cited by 9 publications

References 17 publications

Pemodelan Matematika Perpindahan Panas Konveksi Campuran (Mixed Convection) pada Pelat Horizontal

Pemodelan Matematika Perpindahan Panas Konveksi Campuran (Mixed Convection) pada Pelat Horizontal

Mixed Convective Flow of Micropolar Nanofluid across a Horizontal Cylinder in Saturated Porous Medium

Experimental Investigation of Solidification and Remelting over Cryocooled Sphere Using Different Concentrations of Brine Solution as Phase Change Material

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