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Analysis of the Heat Transport Mechanisms During Melting Around a Horizontal Circular Cylinder

Rieger, H. and Projahn, U. and Beer, Hans (1982):
Analysis of the Heat Transport Mechanisms During Melting Around a Horizontal Circular Cylinder.
In: International Journal of Heat and Mass Transfer, 25 (1), pp. 137-147. ISSN 00179310,
[Article]

Abstract

The melting process around a heated horizontal circular cylinder embedded in a phase change material has been analyzed by means of numerical methods. Both heat conduction and convection have been taken into account to treat this moving boundary problem. Difficulties associated with the complex structure of the timewise changing physical domain (melt region) have been successfully overcome by applying a numerical mapping technique (body-fitted coordinates). Numerical solutions have been obtained for Rayleigh numbers up to Ra = 1.5 · 105, Stefan numbers in the range 0.005 ≦ Ste ≦ 0--08 and for Pr = 50. The results are discussed in detail and indicate that the influence of natural convection has to be considered in all cases.

Item Type: Article
Erschienen: 1982
Creators: Rieger, H. and Projahn, U. and Beer, Hans
Title: Analysis of the Heat Transport Mechanisms During Melting Around a Horizontal Circular Cylinder
Language: English
Abstract:

The melting process around a heated horizontal circular cylinder embedded in a phase change material has been analyzed by means of numerical methods. Both heat conduction and convection have been taken into account to treat this moving boundary problem. Difficulties associated with the complex structure of the timewise changing physical domain (melt region) have been successfully overcome by applying a numerical mapping technique (body-fitted coordinates). Numerical solutions have been obtained for Rayleigh numbers up to Ra = 1.5 · 105, Stefan numbers in the range 0.005 ≦ Ste ≦ 0--08 and for Pr = 50. The results are discussed in detail and indicate that the influence of natural convection has to be considered in all cases.

Journal or Publication Title: International Journal of Heat and Mass Transfer
Journal volume: 25
Number: 1
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD)
Date Deposited: 26 Feb 2015 13:25
Official URL: http://dx.doi.org/10.1016/0017-9310(82)90242-3
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