scholarly journals An efficient algorithm for analysis of nonlinear heat transfer with phase changes

1982 ◽  
Vol 18 (1) ◽  
pp. 119-134 ◽  
Author(s):  
W. Donald Rolph ◽  
Klaus-JÜRgen Bathe
Keyword(s):  
Heat Transfer ◽  
Efficient Algorithm ◽  
Phase Changes ◽  
Nonlinear Heat Transfer

scholarly journals Theoretical Framework of a Variational Formulation for Nonlinear Heat Transfer with Phase Changes

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Eric Feulvarch ◽  
Jean-Christophe Roux ◽  
Jean-Michel Bergheau
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Existence And Uniqueness ◽  
Variational Formulation ◽  
Theoretical Framework ◽  
Phase Changes ◽  
Time Step ◽  
Numerical Resolution ◽  
Nonlinear Heat Transfer ◽  
Uniqueness Of The Solution

This paper discusses mathematical results for a variational formulation dedicated to heat transfer with phase changes. Practical finite element experiences show that the studied formulation can lead to difficulties for the numerical resolution at each time step. The aim of the paper is to show that such numerical pathologies do not come from the basic variational formulation by showing existence and uniqueness of the solution.

THE MODAL IDENTIFICATION METHOD IN NONLINEAR HEAT TRANSFER PROBLEMS

Equipment ◽  
2006 ◽  
Author(s):  
O. Balima ◽  
D. Petit ◽  
J. B. Saulnier ◽  
M. Girault ◽  
Y. Favennec
Keyword(s):  
Heat Transfer ◽  
Modal Identification ◽  
Identification Method ◽  
Nonlinear Heat Transfer ◽  
Transfer Problems

Viscoelastic Nanofluid Flow and Radiative Nonlinear Heat Transfer Over a Stretching Sheet

2015 ◽  
Vol 12 (9) ◽  
pp. 2385-2394
Author(s):  
Md. S. Ansari ◽  
R. Nandkeolyar ◽  
S. S. Motsa ◽  
P. Sibanda
Keyword(s):  
Heat Transfer ◽  
Stretching Sheet ◽  
Nanofluid Flow ◽  
Nonlinear Heat Transfer ◽  
Viscoelastic Nanofluid

Experimental Study on Thermal Hydraulic Characteristics of Steam Condensation in Capillary Glass Tubes

2009 ◽  
Author(s):  
Koji Iiyama ◽  
Akiko Kaneko ◽  
Yutaka Abe ◽  
Yutaka Suzuki
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
High Efficiency ◽  
Capillary Tube ◽  
Glass Tube ◽  
Phase Changes ◽  
Vapor Flow ◽  
Hydraulic Characteristics ◽  
Microchannel Heat Exchanger ◽  
Condensation Flow

At present, a microchannel heat exchanger is requested to achieve high efficiency in small size energy equipments. In order to clarify the heat transfer mechanism in a microchannel heat exchanger, knowledge on the thermal hydraulic characteristics of condensation flow in the channels is essential. However, study on the thermal hydraulic characteristics of condensation flow in a microchannel is hardly conducted except visualization of flow patterns. Objectives of the present study are to estimate the heat transfer performance of the present device and to observe the condensation behavior of vapor flow to clarify the thermal hydraulic characteristics of condensation flow in a capillary tube. As the results, it is confirmed that the microchannel heat exchanger realizes heat exchange of 7 kW when phase changes. In a single capillary glass tube as a simulated unit microchannel, the annular flow, the injection flow and the bubbly flow in a capillary tube are observed. According to the comparison of the present device and the glass tube experiment, it is suggested that the flow structure in the microchannel heat exchanger is almost same as that in the glass capillary tube.

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