Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Melting from heat sources flush mounted on a conducting vertical wall

Melting from heat sources flush mounted on a conducting vertical wall A numerical study is conducted for natural convection dominated melting inside discretely heated rectangular enclosures. This study finds applications in the design and operation of thermal energy storage units and the cooling of electric equipment. Results show the benefits of discrete heating over uniform heating for optimizing the melting process. For enclosures of high aspect ratios (A ∼> 4), configurations leading to well controlled heat source temperatures and long melting times are obtained. For cavities of low aspect ratios (A ∼< 4), it is found that the source span ॑ is the most influential parameter. For ॑ ∼ < 0.45, the melting times are shorter and the heat source temperatures remain equal and moderate during the entire melting process. A map for determining the cavity size and the source distribution that optimizes the melting process is presented. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Numerical Methods for Heat & Fluid Flow Emerald Publishing

Melting from heat sources flush mounted on a conducting vertical wall

Download PDF
21 pages

Loading next page...
 
/lp/emerald-publishing/melting-from-heat-sources-flush-mounted-on-a-conducting-vertical-wall-JKDScbPz0Y
Publisher
Emerald Publishing
Copyright
Copyright © 2000 MCB UP Ltd. All rights reserved.
ISSN
0961-5539
DOI
10.1108/09615530010318017
Publisher site
See Article on Publisher Site

Abstract

A numerical study is conducted for natural convection dominated melting inside discretely heated rectangular enclosures. This study finds applications in the design and operation of thermal energy storage units and the cooling of electric equipment. Results show the benefits of discrete heating over uniform heating for optimizing the melting process. For enclosures of high aspect ratios (A ∼> 4), configurations leading to well controlled heat source temperatures and long melting times are obtained. For cavities of low aspect ratios (A ∼< 4), it is found that the source span ॑ is the most influential parameter. For ॑ ∼ < 0.45, the melting times are shorter and the heat source temperatures remain equal and moderate during the entire melting process. A map for determining the cavity size and the source distribution that optimizes the melting process is presented.

Journal

International Journal of Numerical Methods for Heat & Fluid Flow – Emerald Publishing

Published: May 1, 2000

Keywords: Melting; Natural convection; Numerical methods

References

  • Melting in rectangular and cylindrical cavities: effect of curvature, aspect ratio and buoyancy forces
    Adetutu, O.; Prasad, V.
  • Geometric optimization of cooling techniques
    Bejan, A.
  • Étude de la fusion dans des enceintes munies de sources de chaleur discrètes
    Binet, B.
  • Étude numérique de la fusion dans des enceintes rectangulaires chauffées uniformément ou discrètement par les parois latérales conductrices
    Binet, B.; Lacroix, M.
  • Enthalpy – porosity technique for modeling convection‐diffusion phase change: application to the melting of a pure metal
    Brent, A.D.; Voller, V.R.; Reid, K.J.
  • Study of the thermal performance of a multi‐layer PCM storage unit
    Brousseau, P.; Lacroix, M.
  • Mathematical Physics
    Butkov, E.
  • Conduction of Heat in Solids
    Carslaw, H.S.; Jaeger, J.C.
  • Natural convection from two‐dimensional discrete heat sources in a rectangular enclosure
    Chadwick, M.L.; Webb, B.W.; Heaton, H.S.
  • Numerical simulation of solid‐liquid phase change phenomena
    Costa, M.; Oliva, A.; Segarra, C.D.P.; Alba, R.
  • Modelling liquid‐solid phase changes with melt convection
    Dantzig, J.A.
  • Physical and thermodynamic properties of pure chemicals: data compilation
    Daubert, T.E.; Danner, R.P.
  • Melting and solidification of a pure metal on a vertical wall
    Gau, C.; Viskanta, R.
  • A study of natural convection heat transfer in a vertical rectangular enclosure with two‐dimensional discrete heating: effect of aspect ratio
    Ho, C.J.; Chang, J.Y.
  • Experimental and numerical study of solidification and melting of pure materials
    Ketkar, S.P.; Parang, M.; Arimilli, R.V.
  • Experimental improvements of heat transfer in a latent heat thermal energy storage unit with embedded heat sources
    Lacroix, M.; Duong, T.
  • Finite difference solutions of solidification phase change problems: transformed versus fixed grids
    Lacroix, M.; Voller, V.R.
  • Design, building and testing of a latent heat thermal energy storage element
    Millette, J.; Lacroix, M.; Galanis, N.
  • Application of phase change materials for passive thermal control of plastic quad flat packages: a computational study
    Pal, D.; Joshi, Y.
  • Thermal control of electronic equipment and devices
    Peterson, G.P.; Ortega, A.
  • Influence of discrete heat source location on natural convection heat transfer in a vertical square enclosure
    Refai, G.; Yovanovich, M.M.
  • A numerical study of the flow past an isolated airfoil with separation
    Rhie, C.M.
  • Numerical study on utilization of melting of phase change material for cooling of a heated surface at a constant rate
    Sasaguchi, K.; Ishihara, A.; Zhang, H.
  • A novel finite difference formulation for differential expressions involving both first and second derivatives
    Spalding, D.B.
  • Enhancements of the SIMPLE method for predicting incompressible fluid flows
    Van Doormal, J.P.; Raithby, G.D.
  • Numerical study of conjugate transient solidification in an enclosed region
    Viswanath, R.; Jaluria, Y.
  • An overview of numerical methods for solving phase change problems
    Voller, V.R.
  • A fixed grid numerical modelling methodology for convection‐diffusion mushy region phase‐change problems
    Voller, V.R.; Prakash, C.
  • An enthalpy method for convection/diffusion phase change
    Voller, V.R.; Cross, M.; Markatos, N.C.
  • Effect of wall conduction on melting in an enclosure heated at constant rate
    Zhang, Y.; Chen, Z.
  • Analysis of melting in an enclosure with discrete heating at constant rate
    Zhang, Y.; Chen, Z.; Wang, Q.
  • Melting in an enclosure with discrete heating at constant rate
    Zhang, Y.; Chen, Z.; Wang, Q.; Wu, Q.