Heat Transfer From an Isothermal Vertical Surface With Adjacent Heated Horizontal Louvers: Numerical Analysis

2002 ◽  
Vol 124 (6) ◽  
pp. 1072-1077 ◽  
Author(s):  
M. Collins ◽  
S. J. Harrison ◽  
D. Naylor ◽  
P. H. Oosthuizen
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Numerical Analysis ◽  
Transfer Rate ◽  
Radiative Heat ◽  
Element Model ◽  
Vertical Surface ◽  
Two Dimensional ◽  
Conjugate Conduction ◽  
Steady Laminar

The present study examines the influence of heated, horizontal, and rotatable louvers on the convective and radiative heat transfer from a heated or cooled vertical isothermal surface. The system represents an irradiated Venetian blind adjacent to the indoor surface of a window. Detailed heat transfer results were obtained using a steady, laminar, two-dimensional, conjugate conduction/convection/radiation finite element model for two window temperatures (warm and cool compared to ambient) and irradiation levels, two louver to surface spacings, and three louver angles. The effect of the heated louvers on the heat transfer rate from the surface has been demonstrated.

Heat Transfer From an Isothermal Vertical Surface With Adjacent Heated Horizontal Louvers: Validation

2002 ◽  
Vol 124 (6) ◽  
pp. 1078-1087 ◽  
Author(s):  
M. Collins ◽  
S. J. Harrison ◽  
D. Naylor ◽  
P. H. Oosthuizen
Keyword(s):  
Heat Transfer ◽  
Transfer Rate ◽  
Numerical Study ◽  
Surface Flux ◽  
Element Model ◽  
Vertical Surface ◽  
Two Dimensional ◽  
Local Surface ◽  
Conjugate Conduction ◽  
Steady Laminar

The present study examines the influence of heated, horizontal, and rotateable louvers on the convective heat transfer from a heated or cooled vertical isothermal surface. The system represents an irradiated Venetian blind adjacent to the indoor surface of a window. Detailed temperature field and local surface flux data were obtained using a Mach-Zehnder Interferometer for two window temperatures (warm and cool compared to ambient) and irradiation levels, two louver to plate spacings, and three louver angles. The results have been compared to a steady, laminar, two-dimensional, conjugate conduction/convection/radiation finite element model of this problem. The effect of the heated louvers on the heat transfer rate from the plate surface has been demonstrated and the results of the numerical study have been validated.

Numerical Modeling of Radiative and Convective Heat Transfer From an Irradiated Complex Window Assembly

2000 ◽  
Author(s):  
M. Collins ◽  
S. J. Harrison ◽  
P. H. Oosthuizen ◽  
D. Naylor
Keyword(s):  
Heat Transfer ◽  
Radiative Heat ◽  
Numerical Study ◽  
Two Dimensional ◽  
Plate Surface ◽  
The Finite Element Method ◽  
Radiation Model ◽  
Conjugate Conduction ◽  
Plate Distance ◽  
Steady Laminar

Abstract The present numerical study examines the influence of heated, horizontal, and rotateable louvers on the convective and radiative heat transfer from a hot or cold vertical isothermal surface. The system models absorption of solar energy in a Venetian blind adjacent to the indoor surface of a window. Building on previous analyses, a steady, laminar, two-dimensional, conjugate conduction / convection / radiation model of this problem has been developed, and solutions have been obtained using the finite element method. Validation of the model against existing solutions has been undertaken. Results were obtained for two window temperatures (warm and cool compared to ambient), two louver to plate spacings, and three louver angles. The results clearly demonstrate the effect of the model variables on heat transfer from the plate surface. With few exceptions, steady periodicity along the plate was clearly demonstrated. More importantly, increased independence of the results from the louver angle as louver to plate distance increased was demonstrated.

Analysis of Heat Transfer Process and the Finite Element Model of the 10kV Three-Core Pipe Cables

2014 ◽  
Vol 1008-1009 ◽  
pp. 583-587
Author(s):  
Rui Bo Su ◽  
Peng Wang ◽  
Gang Liu ◽  
Peng Yu Wang
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Finite Element Model ◽  
Transfer Process ◽  
Element Model ◽  
Heat Transfer Process ◽  
Two Dimensional ◽  
Field Equations ◽  
Simulated Calculation ◽  
The Finite Element Model

This paper first describes a variety of heat transfer which exists in cable’s discharge pipe laying process, and analyzes the entire heat transfer process of 10kV three core cable in a two-dimensional interface qualitatively according to the heat transfer ways. Meanwhile, a finite element model of 10kV three-core cable’s discharged pipe-laying is established, and its temperature field equations and boundary condition equations has been discussed. Finally, we get the heat transfer process of the three core cable’s pipe-laying discharged and a finite element model which can be applied to simulated calculation.

scholarly journals Solution Method of Inverse Problems to estimate the Profile of Absorption Coefficient in Two-dimensional Radiative Heat Transfer Systems.

1997 ◽  
Vol 63 (615) ◽  
pp. 3729-3736
Author(s):  
Kazuhiko KUDO ◽  
Akiyoshi KURODA ◽  
Eiji OZAKI ◽  
Tsuyoshi FUJIKANE ◽  
Masahito OGUMA
Keyword(s):  
Heat Transfer ◽  
Inverse Problems ◽  
Absorption Coefficient ◽  
Radiative Heat Transfer ◽  
Solution Method ◽  
Radiative Heat ◽  
Two Dimensional

scholarly journals Numerical analysis of radiative heat transfer from three dimensional bodies of arbitrary configurations.

1987 ◽  
Vol 30 (270) ◽  
pp. 1982-1987 ◽  
Author(s):  
Shigenao MARUYAMA ◽  
Toshio AIHARA
Keyword(s):  
Heat Transfer ◽  
Numerical Analysis ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Three Dimensional

Elasto-Plastic Coupled Temperature-Displacement Finite Element Analysis of Two-Dimensional Rolling-Sliding Contact With a Translating Heat Source

1991 ◽  
Vol 113 (1) ◽  
pp. 93-101 ◽  
Author(s):  
S. M. Kulkarni ◽  
C. A. Rubin ◽  
G. T. Hahn
Keyword(s):  
Finite Element ◽  
Half Space ◽  
Plastic Material ◽  
Element Model ◽  
Rolling Contact ◽  
Two Dimensional ◽  
Element Analysis ◽  
Element Mesh ◽  
Perfectly Plastic ◽  
Elastic Perfectly Plastic

The present paper, describes a transient translating elasto-plastic thermo-mechanical finite element model to study 2-D frictional rolling contact. Frictional two-dimensional contact is simulated by repeatedly translating a non-uniform thermo-mechanical distribution across the surface of an elasto-plastic half space. The half space is represented by a two dimensional finite element mesh with appropriate boundaries. Calculations are for an elastic-perfectly plastic material and the selected thermo-physical properties are assumed to be temperature independent. The paper presents temperature variations, stress and plastic strain distributions and deformations. Residual tensile stresses are observed. The magnitude and depth of these stresses depends on 1) the temperature gradients and 2) the magnitudes of the normal and tangential tractions.

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