Magnetohydrodynamics of unsteady viscous fluid on boundary layer past a sliced sphere

Permasalahan yang dibahas pada paper ini adalah aliran konveksi campuran magnetohidrodinamik (MHD) tak tunak dari fluida Newtonian yang melalui bola bermagnet. Persamaan pembangun dimensional terdiri dari persamaan kontinuitas, persamaan momentum dan persamaan energi. Persamaan ini diubah ke bentuk non-dimensional menggunakan variabel non-dimensional. Selanjutnya, semua persamaan dianalisis dengan teori lapisan batas dan ditransformasikan ke bentuk persamaan non-similar. Persamaan ini diselesaikan secara numerik menggunakan metode beda hingga skema implisit. Profil kecepatan dan temperatur di permukaan bola bermagnet ditentukan oleh beberapa parameter seperti bilangan Prandtl (Pr), parameter magnetik (M) dan parameter konveksi campuran (). Gesekan kulit dan transfer panas dipelajari dan diinvestigasi selain kecepatan dan temperatur. Kata Kunci: magnetohidrodinamik, konveksi campuran, bola bermagnet, skema implisit.

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“…Nursalim, dkk. [1] mempelajari perilaku aliran fluida magnetohidrodinamik pada bola teriris di titik stagnasi 0.…”

Section: Pendahuluanunclassified

Aliran Konveksi Campuran Magnetohidrodinamik yang Melewati Bola Bermagnet

Mardianto

Widodo

Adzkiya

2020

LIMITS

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“…The use of liquid metals or nanofluids in the case of MHD, has been widely developed such as Ferrofluid, Lithium, Iron or Aluminum Mixtures, and so on. The media or objects studied in the fluid flow that pass through it have also been carried out by several researchers, such as solid sphere by Mardianto et al, [6], Norasia et al, [7], Rumite et al, [9] and Mat et al, [11], porous cylinder by Widodo et al, [10], Ellahi et al, [14] and Widodo et al, [15], Sliced ball by Widodo [4] and Nursalim et al, [16], porous sliced ball in Widodo et al, [2], and the stretched sheet or the plate by Alizadeh-Pahlavan and Borjian-Boroujeni [17], Chaudhary and Kumar [18], Nield and Kuznetsov [19], Pantzali et al, [20], and Zainal et al, [21].…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic Nanofluid Flows Passing through a Smart Fabric under the Influence of Magnetic Field and Radiative Flux

Zaitun,

Basuki Widodo,

Chairul Imron

2024

ARFMTS

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The study of MHD have been widely on topics with complex problems. Just as this topic involves inductive polymers or smart fabrics for engineering in machinery or protective equipment. The smart fabrics can be involved in MHD studies become a useful material. The smart fabric is a sheet of inductive polymer that can be an influence in the MHD analysis as well as a parameter that can be considered. In this study, the MHD of nanofluid namely Iron-(III)-oxide flows past in smart fabrics under influence of magnetic field and radiative flux is studied by constructing a mathematical model and then the model solved numerically using the Keller-Box scheme. The effect of Mixed Convection and stretching parameter is considered on the model. Numerical simulations were carried out to examine the effect of the parameters, are obtained the profile of velocity and temperature increase when the magnetic and stretching parameters increases, the velocity profile and temperature decreases when the Prandtl number are increases, the profiles of velocity are decreases and temperature increases when porosity variable and volume fraction parameter’s value increases, and the profile of temperature increase when the mixed convection’s value and the radiation parameter increases.

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“…The importance thing of magnetic fluid flow had attracted researchers to study and explore its benefits and uses in the industrial sector, especially in convective flow and heat transfer processes. The studies of convective MHD flow and heat transfer on the stagnation point when the fluid flow through the various geometry, such as sliced sphere and sphere, have been investigated by Widodo et al, [12], Widodo et al, [13], and Nursalim et al, [14].…”

Section: Introductionmentioning

confidence: 99%

Numerical Solution of Mixed Convection MHD Viscous Fluid Flow on Lower Stagnation Point of a Sliced Magnetic Sphere

Widodo

Nugraha

Rahayuningsih³

2022

ARFMTS

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This paper considers mathematical modeling on mixed convection MHD viscous fluid flow on the lower stagnation point of a magnetic sliced sphere. The study began with transforming the governing equations which are in dimensional partial differential equations to non-dimensional ordinary differential equations by using the similarity variable. The resulting similarity equations are then solved by the Keller-Box scheme. The characteristics and effects of the Prandtl number, the sliced angle, the magnetic parameter, and the mixed convection parameter are analyzed and discussed.

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Magnetohydrodynamics of unsteady viscous fluid on boundary layer past a sliced sphere

Cited by 9 publications

References 2 publications

Aliran Konveksi Campuran Magnetohidrodinamik yang Melewati Bola Bermagnet

Aliran Konveksi Campuran Magnetohidrodinamik yang Melewati Bola Bermagnet

Magnetohydrodynamic Nanofluid Flows Passing through a Smart Fabric under the Influence of Magnetic Field and Radiative Flux

Numerical Solution of Mixed Convection MHD Viscous Fluid Flow on Lower Stagnation Point of a Sliced Magnetic Sphere

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