THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Yangli Chen

,

Changhong Peng

,

Yun Guo

EXPERIMENTAL AND NUMERICAL STUDY ON MELTING PROCESS OF PARAFFIN IN A VERTICAL ANNULAR CYLINDER

ABSTRACT
The melting process of paraffin wax in a central heating vertical annular cylinder was simulated by a numerical model based on the enthalpy-porosity method. The numerical results were validated against the experimental results. The melting experiment was performed in a thermostatic water tank which can provide good initial conditions and constant temperature boundary conditions. The electrical heating rod located in the central of the cylinder was supposed to provide heating at a constant power. Good agreements between experimental and numerical heat transfer data were achieved. Natural convection and melt front interface were well predicted by simulation. However, considerable differences appeared due to mushy zone constant in the model. A recommended value of mushy zone constant was obtained by comparison to the experiment. The influence of thermal conductivity coefficient was also analyzed numerically.
KEYWORDS
melting process, enthalpy-porosity method, phase change experiments, numerical simulation, mushy zone constant
PAPER SUBMITTED: 2016-05-04
PAPER REVISED: 2018-03-08
PAPER ACCEPTED: 2018-03-23
PUBLISHED ONLINE: 2018-04-28
DOI REFERENCE: https://doi.org/10.2298/TSCI160504099C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 2, PAGES [525 - 535]
REFERENCES
  1. Zhang, Y., et al., Melting in an Enclosure with Discrete Heating at a Constant Rate, Experimental Thermal and Fluid Science , 6 (1999), 2, pp. 196-201
  2. Tan, F. L., Constrained and Unconstrained Melting inside a Sphere, International Communications in Heat and Mass Transfer , 35 (2008), 4, pp. 466-475
  3. Sparrow, E. M., Broadbent J. A., Inward Melting in a Vertical Tube Which Allows Free Expansion of the Phase-change Medium, ASME. J. Heat Transfer, 104(1982), 2, pp. 309-15
  4. Hosseini, M. J., et al., A Combined Experimental and Computational Study on the Melting Behavior of a Medium Temperature Phase Change Storage Material inside Shell and Tube Heat Exchanger, International Communications in Heat and Mass Transfer, 39(2012), 9, pp. 1416-24
  5. Zhao, Y., et al., Melting and Flowing in Multiphase Environment, Computers and Graphics, 30(2006), 4, pp. 519-528
  6. Carlson, M. T., Rigid Melting and Flowing, Ph. D. thesis, Georgia Institute of Technology, Georgia, USA, 2004
  7. Jana, S., et al., A Numerical Method to Compute Solidification and Melting Processes, Applied Mathematical Modelling, 31(2007), 1, pp. 93-119
  8. Uchibori, A., Ohshima, H., Numerical Analysis of Melting/Solidification Phenomena Using a Moving Boundary Analysis Method X-FEM, Nuclear Technology, 167(2009), pp. 83-94
  9. Voller, V.R., et al., An enthalpy method for convection/diffusion phase change, Int. J. Numer. Methods Eng, 24 (1987), 1, pp. 271-284
  10. Brent, D., et al., Enthalpy-Porosity Technique for Modeling Convection Diffusion Phase Change Application to the Melting of a Pure Metal, Numerical Heat Transfer, 13(1998), 3, pp. 297-318
  11. ANASYS 14.5 Help. ANSYS, Inc., Canonsburg, PA, USA, 2012
  12. Shmueli, H., et al., Melting in a Vertical Cylindrical Tube Numerical Investigation and Comparison with Experiments, International Journal of Heat and Mass Transfer, 53(2010), 19-20, pp. 4082-4091
  13. Kheirabadi, A. C., Groulx, D., The Effect of the Mushy-Zone Constant on Simulated Phase Change Heat Transfer, Proceedings, CHT-15: ICHMT International Symposium on Advances in Computational Heat Transfer, Piscataway, USA, 2015
PDF VERSION [DOWNLOAD]
Experimental and numerical study on melting process of paraffin in a vertical annular cylinder

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence