INSTABILITIES IN THE THERMAL ENTRANCE REGION OF A COUNTER-CURRENT HORIZONTAL HEAT EXCHANGER - EXPERIMENTAL APPROACH -

1996 ◽  
Author(s):  
L. Estel ◽  
F. Bagui ◽  
ABDELGHANI-IDRISSI Moulay-Ahmed ◽  
Nordine Mouhab
Keyword(s):  
Heat Exchanger ◽  
Experimental Approach ◽  
Entrance Region ◽  
Thermal Entrance Region ◽  
Counter Current ◽  
Thermal Entrance

Periodic Forced Convection in a Darcy Metallic Foam: The LTNE Model

2012 ◽  
Author(s):  
Eugenia Rossi di Schio ◽  
Antonio Barletta
Keyword(s):  
Forced Convection ◽  
Outer Boundary ◽  
Method Of Lines ◽  
Mean Value ◽  
Entrance Region ◽  
Solid Matrix ◽  
Metallic Foam ◽  
The Method Of Lines ◽  
Thermal Entrance Region ◽  
Thermal Entrance

The present paper studies the thermal entrance region in a concentric annular duct filled by a fluid saturated porous metallic foam, with reference to steady forced convection and to a thermal boundary condition given by a wall temperature longitudinally varying with a sinusoidal law. The effect of viscous dissipation in the fluid is taken into account, and a two-temperature model is employed in order to evaluate separately the local fluid and solid matrix temperatures. The governing equations in the thermal entrance region are solved numerically by the method of lines. The Nusselt numer and its mean value in an axial period is evaluated, with reference both to the inner and the outer boundary.

scholarly journals EXPERIMENTAL STUDY ON HEAT TRANSFER OF COMBINED FREE AND FORCED LAMINAR CON-VECTION IN THERMAL ENTRANCE REGION OF HORIZONTAL RECTANGULAR DUCTS

1978 ◽  
Vol 11 (6) ◽  
pp. 438-443 ◽  
Author(s):  
HAJIME NAKAMURA ◽  
AKIHIRO MATSUURA ◽  
JUMEI KIWAKI ◽  
SETSURO HIRAOKA ◽  
IKUHO YAMADA
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Entrance Region ◽  
Thermal Entrance Region ◽  
Thermal Entrance

Entropy generation analysis for microscale forced convection with radiation in thermal entrance region

2014 ◽  
Vol 51 (3) ◽  
pp. 307-312 ◽  
Author(s):  
Cyrus Aghanajafi ◽  
Maziar Alasvand Bakhtiarpoor ◽  
Mehran Taghipour ◽  
Farid Mohamadi
Keyword(s):  
Forced Convection ◽  
Entropy Generation ◽  
Entrance Region ◽  
Thermal Entrance Region ◽  
Thermal Entrance
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