Forced Convection Heat Transfer of Newtonian Fluids from a Backward-Facing Step: Effects of Expansion Ratio, Reynolds, and Prandtl Numbers

2014 ◽  
Vol 45 (4) ◽  
pp. 313-341
Author(s):  
Ankit Kumar ◽  
Amit Dhiman
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Convection Heat Transfer ◽  
Expansion Ratio ◽  
Newtonian Fluids ◽  
Convection Heat ◽  
Backward Facing Step ◽  
Forced Convection Heat Transfer ◽  
Prandtl Numbers

Forced Convection Heat Transfer to Power-Law Non-Newtonian Fluids Inside Triangular Ducts

2004 ◽  
Vol 25 (7) ◽  
pp. 23-33 ◽  
Author(s):  
CLÉBER L. CHAVES ◽  
JOÃO N. N. QUARESMA ◽  
EMANUEL N. MACÊDO ◽  
LUIZ M. PEREIRA ◽  
JOÃO A. LIMA
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Power Law ◽  
Convection Heat Transfer ◽  
Newtonian Fluids ◽  
Convection Heat ◽  
Forced Convection Heat Transfer

Forced Convection Heat Transfer From a Uniformly Heated Cylinder

1962 ◽  
Vol 84 (3) ◽  
pp. 257-261 ◽  
Author(s):  
H. C. Perkins ◽  
G. Leppert
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Convection Heat Transfer ◽  
Practical Interest ◽  
Reynolds Numbers ◽  
Convection Heat ◽  
Transfer Coefficients ◽  
Heated Cylinder ◽  
Forced Convection Heat Transfer ◽  
Prandtl Numbers

Forced convection heat transfer from a cylindrical heating element with crossflow occurs in many situations of practical interest, but heat-transfer coefficients for liquids have been reported in the literature only for Reynolds numbers below 200. This paper correlates new data taken with water and ethylene glycol at Reynolds numbers from 40 to 100,000 and Prandtl numbers from 1 to 300. The effects of temperature differences large enough to produce significant changes in viscosity across the boundary layer have also been investigated and are correlated in terms of a viscosity ratio.

Approximate Analytical Solution of Forced Convection Heat Transfer From Isothermal Spheres for All Prandtl Numbers

1994 ◽  
Vol 116 (4) ◽  
pp. 838-843 ◽  
Author(s):  
G. Refai Ahmed ◽  
M. M. Yovanovich
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Energy Equation ◽  
Convection Heat Transfer ◽  
Convection Heat ◽  
Forced Convection Heat Transfer ◽  
Effective Velocity ◽  
Blending Method ◽  
Heat Transfer Correlations ◽  
Prandtl Numbers

A new, simple and approximate analytical method based on linearization of the energy equation is proposed to develop solutions for forced convection heat transfer from isothermal spheres. Furthermore, heat transfer correlations from spheres are proposed in the range of Reynolds number, 0 ≤ ReD ≤ 2 × 104, and all Prandtl numbers. This technique is performed as follows. The first step is to approximate the energy equation to the form of a transient heat conduction equation that has an existing solution. The second step is to evaluate the effective velocity through scaling analysis in the limit of Pr → ∞ and Pr → 0 and then resubstitute the effective velocity into the solution of the energy equation. Finally, a “blending method” is used to provide a general model for all Prandtl numbers. Comparison of the heat transfer correlations for NuD versus ReD from the present study with the available correlations in the literature reveals very good agreement.

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