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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/10887
Title: A three-dimensional numerical modeling of atmospheric pool boiling by the coupled map lattice method
Authors: Gupta A.
Ghoshdastidar P.S.
Published in: Journal of Heat Transfer
Abstract: In the present paper, the characteristic atmospheric pool boiling curve is qualitatively reproduced for water on a temperature controlled thin copper strip having comparable length and breadth by the coupled map lattice (CML) method using a three-dimensional boiling field model. The basic objective of the work is to improve the prediction of the critical heat flux (CHF) with respect to the 2D CML model of Ghoshdastidar et al. (Ghoshdastidar P. S., Kabelac, S., and Mohanty, A., 2004, "Numerical Modelling of Atmospheric Pool Boiling by the Coupled Map Lattice Method," J. Mech. Eng. Sci., IMechE Part C, 218, pp. 195-205). The work models saturated pool boiling of water at 1 bar on a large (much larger than the minimum wavelength of 2D Taylor waves) and thin horizontal copper strip. The pool height is 0.7 mm, indicating thin film boiling. In the present model, 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 changes with respect to the 2D model are primarily with respect to 3D modeling of thermal diffusion and 2D distribution of nucleating cavity sizes. The predicted CHF is 1.57 MW/m2 as compared to the actual value of 1.3 and 0.36 MW/m2 predicted by the 2D CML model of Ghoshdastidar et al. (see above). It can be said that for the first time a coupled map lattice method which is essentially qualitative in nature has been able to predict the CHF of saturated pool boiling of water at 1 bar very close to the actual value. Furthermore, a sensitivity analysis shows that the model gives physically realistic and stable results. Copyright © 2006 by ASME.
Citation: Journal of Heat Transfer (2006), 128(11): 1149-1158
URI: https://doi.org/10.1115/1.2352785
http://repository.iitr.ac.in/handle/123456789/10887
Issue Date: 2006
Keywords: 3D numerical modeling
CML
Coupled map lattice
Nonlinear dynamics
Pool boiling
ISSN: 221481
Author Scopus IDs: 55491955100
6603758271
Author Affiliations: Gupta, A., Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, U.P. 208016, India
Ghoshdastidar, P.S., Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, U.P. 208016, India
Corresponding Author: Gupta, A.; Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, U.P. 208016, India
Appears in Collections:Journal Publications [ME]

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