Flow Past a Porous Permeable Sphere: Hydrodynamics and Heat-Transfer Studies

2011 ◽  
Vol 51 (4) ◽  
pp. 2170-2178 ◽  
Author(s):  
Ashok K. Jain ◽  
Suddhasatwa Basu
Keyword(s):  
Heat Transfer ◽  
Flow Past ◽  
Permeable Sphere

Flow Past a Spinning Sphere With Surface Blowing and Heat Transfer

2005 ◽  
Vol 127 (1) ◽  
pp. 163-171 ◽  
Author(s):  
H. Niazmand ◽  
M. Renksizbulut
Keyword(s):  
Heat Transfer ◽  
Three Dimensional ◽  
Flow Regimes ◽  
Solid Sphere ◽  
Temporal Variations ◽  
Transfer Coefficients ◽  
Transfer Rates ◽  
Particle Spin ◽  
Flow Past ◽  
Angular Velocities

Computations are performed to determine the transient three-dimensional heat transfer rates and fluid forces acting on a stream-wise spinning sphere for Reynolds numbers in the range 10⩽Re⩽300 and angular velocities Ωx⩽2. In this Re range, classical flow past a solid sphere develops four different flow regimes, and the effects of particle spin are studied in each regime. Furthermore, the combined effects of particle spin and surface blowing are examined. Sphere spin increases drag in all flow regimes, while lift shows a nonmonotonic behavior. Heat transfer rates are not influenced by spin up to a certain Ωx but increase monotonically thereafter. An interesting feature associated with sphere spin is the development of a special wake regime such that the wake simply spins without temporal variations in its shape. For this flow condition, the magnitudes of the lift, drag, and heat transfer coefficients remain constant in time. Correlations are provided for drag and heat transfer.

Effect of MHD and Mass Transpiration on a Viscous Liquid Flow past Porous Stretching Sheet with Heat Transfer

2021 ◽  
Vol 30 (3) ◽  
pp. 404-419
Author(s):  
P. N. Vinay Kumar ◽  
U. S. Mahabaleshwar ◽  
N. Swaminathan ◽  
G. Lorenzini
Keyword(s):  
Heat Transfer ◽  
Viscous Liquid ◽  
Liquid Flow ◽  
Stretching Sheet ◽  
Flow Past

Heat transfer and drag for transverse flow past bundles of finned tubes at low reynolds numbers

1978 ◽  
Vol 14 (10) ◽  
pp. 905-907
Author(s):  
A. S. Lyshevskii ◽  
V. G. Sokolov ◽  
V. M. Sychev ◽  
L. Ya. Shkret
Keyword(s):  
Heat Transfer ◽  
Reynolds Numbers ◽  
Transverse Flow ◽  
Low Reynolds Numbers ◽  
Finned Tubes ◽  
Flow Past ◽  
Low Reynolds
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