Journal of Heat Transfer, ( ISI ), Volume (144), No (2), Year (2021-12)

Title : ( Numerical Investigation of Flow and Heat Transfer From a Rotating Sphere With Constant Angular Velocity Around Vertical Axis Floating in Stationary Fluid )

Authors: sajjad safarzade , Asgar Bradaran Rahimi ,

Citation: BibTeX | EndNote

Abstract

Convective heat transfer for a rotating sphere around a vertical axis floating in stationary fluid is studied numerically using the model of volume of fluid. The effects of the immersion angle and rotating velocity on the streamlines, isotherms, and volume fraction contours, mean and local Nusselt numbers, volumetric flow rate and water film thickness are investigated for the angular rotational velocity, 1500 to 3500 and the immersion angle 30 to 60. The results show that the sphere\\\'s rotation causes the liquid to be sucked from the lower pole of the sphere, which is thrown out after stopping in the equator. Due to the strong jet flow in the equational zone, heat is transferred by forced convection, but diffusion is dominant for heat tranfer in other zones.

Keywords

, rotating sphere, VOF model, forced convection, heat transfer, immersion angle, jet
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@article{paperid:1087922,
author = {Safarzade, Sajjad and Bradaran Rahimi, Asgar},
title = {Numerical Investigation of Flow and Heat Transfer From a Rotating Sphere With Constant Angular Velocity Around Vertical Axis Floating in Stationary Fluid},
journal = {Journal of Heat Transfer},
year = {2021},
volume = {144},
number = {2},
month = {December},
issn = {0022-1481},
keywords = {rotating sphere; VOF model; forced convection; heat transfer; immersion angle; jet},
}

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%0 Journal Article
%T Numerical Investigation of Flow and Heat Transfer From a Rotating Sphere With Constant Angular Velocity Around Vertical Axis Floating in Stationary Fluid
%A Safarzade, Sajjad
%A Bradaran Rahimi, Asgar
%J Journal of Heat Transfer
%@ 0022-1481
%D 2021

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