Numerical modelling of atmospheric pool boiling by the coupled map lattice method

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Authors

  • P. S. Goshdastidar
  • S. Kabelac
  • A. Mohanty

External Research Organisations

  • Helmut Schmidt University
  • Indian Institute of Technology Kanpur (IITK)
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Details

Original languageEnglish
Pages (from-to)195-205
Number of pages11
JournalProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Volume218
Issue number2
Publication statusPublished - 1 Feb 2004
Externally publishedYes

Abstract

In the present paper, the characteristic atmospheric saturated pool boiling curve is qualitatively reproduced for water on a temperature-controlled long and thin copper strip using the coupled map lattice (CML) method known in non-linear spatio-temporal chaos dynamics. The pool height is 0.7 mm, indicating that the boiling is of the thin-film type. The work modifies the basic theoretical model proposed by Shoji in 1998 in terms of nucleation superheat distribution and mixing. The stirring action of the bubbles is modelled by increasing the fluid thermal diffusivity by an enhancement factor. It is assumed that boiling is governed by (a) nucleation from cavities on a heated surface, (b) thermal diffusion, (c) bubble rising motion and associated convection, (d) phase change and (e) Taylor instability. The effectiveness of the enhancement factor approach in the present model is clearly seen in its capability of reproducing the saturated pool boiling curve well and predicting the critical heat flux (CHF) in the same order of magnitude of the actual value.

Keywords

    Coupled map lattice (CML), Non-linear dynamics, Numerical modelling, Pool boiling

ASJC Scopus subject areas

Cite this

Numerical modelling of atmospheric pool boiling by the coupled map lattice method. / Goshdastidar, P. S.; Kabelac, S.; Mohanty, A.
In: Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 218, No. 2, 01.02.2004, p. 195-205.

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Download

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AU - Mohanty, A.

N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

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