Heat transfer from a non-isothermal rotating rough disk subjected to forced flow

Usman, Muhammad; Mehmood, Ahmer

doi:10.1016/j.icheatmasstransfer.2019.104395

Cited by 12 publications

(7 citation statements)

References 11 publications

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“…Rough surface is represented by continuous function s(r) = a 0 cos(2Nπr); r = r/b, where a 0 represents the amplitude of the wavy surface, N represents the wave number fitted on the radius b of the disk, and r denotes the radial coordinate. [20] The non-uniform temperature function of the disk surface is expressed as T w = T ∞ + C 0 r n * , where C 0 is a normal number and n * is the temperature index, T w is the disk surface temperature, and T ∞ is the fluid potential flow zone temperature.…”

Section: Formulation Of Problemmentioning

confidence: 99%

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Coupled flow and heat transfer of power-law nanofluids on non-isothermal rough rotary disk subjected to magnetic field

Pei¹,

Zhang²,

Zheng³

et al. 2022

Chinese Phys. B

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In this paper, we study coupled flow and heat transfer of power-law nanofluids on a non-isothermal rough rotating disk subject to a magnetic field. The problem is formulated in terms of specified curvilinear orthogonal coordinate system. An improved BVP4C algorithm is proposed and numerical solutions are obtained. The influence of volume fraction, types and shapes of nanoparticles, magnetic field and power-law index on the flow and heat transfer behavior are discussed.<br/>Results show that the power-law exponents (PLE), nanoparticle volume fraction (NVF) and magnetic field inclination angle (MFIA) are almost no effects on velocities in wave surface direction, but have small or significant effects on azimuth direction. NVF have remarkable influence on local Nusselt number (LNN) and friction coefficients (FC) in radial and azimuth directions (AD). LNN increases with NVF while FC in AD decrease. The types of nanoparticles, magnetic field strength and inclination have small effects on LNN, but they have remarkable effects on the friction coefficients with positively correlated while the inclination is negatively correlated with heat transfer rate. The size of the nanoparticle shape factor is positively correlated with LNN.

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Section: Formulation Of Problemmentioning

confidence: 99%

“…[19] The studies of the uneven temperature distribution on the rough rotating disk can be obtained from Refs. [2,20]. In the two articles the non-uniform temperature distribution of the radius power-law is used.…”

Section: Introductionmentioning

confidence: 99%

Coupled flow and heat transfer of power-law nanofluids on non-isothermal rough rotary disk subjected to magnetic field

Pei¹,

Zhang²,

Zheng³

et al. 2022

Chinese Phys. B

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“…Doh et al [12] studied the nanoparticles thermal features in viscous fluid subjected to permeable rotating disk having variable thickness property. Usman et al [13] communicated the thermal flow aspects by considering wavy rotating disk through force flow. Along with rotating disk geometry, the flow configurations subjected to oscillatory motion is a subject of vast interest among industrial applications such as oceanographic streams, atmospheric dynamics, chaos and geotropic turbulence.…”

Section: Sandeep and Sulochanamentioning

confidence: 99%

Effects of injection and suction on time dependent flow across oscillatory disk

Qureshi¹,

Shehzad²,

Abbas³

et al. 2020

Phys. Scr.

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A rotating spinning disk configuration is adopted. Laminar, compressible flow is initiated due to periodically oscillating disk. The fluid features include thermal conductivity, density and viscosity are depending only on temperature. The features of uniform injection and suction are also comprised in convective flow. The mathematical model is reframed through preferable new variables. Numerical results are attained by first executing the approach of finite differences on normalized system of partial differential mathematical expressions and then implemented Successive over Relaxation (SOR) procedure. Three-dimensional view of oscillatory flow phenomenon is demonstrated through graphs. Three-dimensional vision of heat transport rate and shear stresses is also established in graphical format. Oscillatory behavior of heat transport rate and shear stresses along time is noticed whereas the mean positions of wave solutions are enhanced linearly in upward directions with increased values of

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“…The researchers used numerical approaches to solve the nonlinear coupled differential equations at the requisite accuracy. 27–30…”

Section: Introductionmentioning

confidence: 99%

“…The researchers used numerical approaches to solve the nonlinear coupled differential equations at the requisite accuracy. [27][28][29][30] The researchers have researched viscous flow and magnetohydrodynamic flow across a rotating plate, according to the aforementioned literature review. However, the researchers have not looked into the flow of ferrofluid over a rotating and vertically moving disc.…”

Section: Introductionmentioning

confidence: 99%

Unsteady ferrohydrodynamic flow and heat transfer over a rotating and vertical moving disc embedded in a porous medium with entropy generation

Bhandari

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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On the unsteady flow over a rotating and vertically moving disc, the synchronous effects of magnetic polarization force, medium permeability, and vertical upward movement of the disc are investigated. The velocity distribution and heat transfer enhancement are influenced by magnetic polarization force, medium permeability, Eckert number, and disc overheating. The magnetization force, on the other hand, has a substantial impact on the system’s entropy generating rate. For varied ranges of disc movement expansion/contraction parameter, ferromagnetic interaction number, medium permeability parameter, and Prandtl number, the stress and local heat transfer rate on the disc are quantitatively shown. The local heat transfer rate is enhanced by a higher range medium permeability parameter and ferromagnetic interaction number.

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Heat transfer from a non-isothermal rotating rough disk subjected to forced flow

Cited by 12 publications

References 11 publications

Coupled flow and heat transfer of power-law nanofluids on non-isothermal rough rotary disk subjected to magnetic field

Coupled flow and heat transfer of power-law nanofluids on non-isothermal rough rotary disk subjected to magnetic field

Effects of injection and suction on time dependent flow across oscillatory disk

Unsteady ferrohydrodynamic flow and heat transfer over a rotating and vertical moving disc embedded in a porous medium with entropy generation

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