每年出版 12 期
ISSN 打印: 1044-5110
ISSN 在线: 1936-2684
Indexed in
MODELING OF STEADY-STATE HEAT TRANSFER IN A WATER SPRAY IMPINGEMENT ONTO A HEATED WALL
摘要
The application of the work presented in this paper is that of the cooling by water spray impingement of hot surfaces as used, for example, in steel manufacture. A new spray impingement heat transfer model has been developed on the basis of the engineering superposition principle. The heat transfer and drop hydrodynamic phenomena occurring during spray cooling are intimately related but uncoupled in the model. To make these phenomena independent, impaction-behavior data were extracted from experimental data based on steady-state conditions in the literature [S. Chandra and C. T. Avedisian, Proc. R. Soc. London, Ser. A, vol. 432, pp. 13−41, 1991; J. D. Bernardin, C. J. Stebbins, and I. Mudawar, Int. J. Heat Mass Transfer, vol. 40, no. 2, pp. 247−267, 1997], and transient heat transfer data were obtained by means of an in-house computational code. The model is used here to predict the heat flux from a constant-temperature hot surface to the spray for the three heat transfer boiling regimes under the following droplet impingement Weber number and wall temperature ranges: 0 < We < 1000 and 373 K < TW < 573 K, under normal pressure conditions. The model performance is tested against one major set of steady-state experimental heat transfer data taken from the literature [R. A. Sharief, G. G. Nasr, A. J. Yule, J. R. Jeong, and D. D. James, Proc. of ICLASS-2000, Pasadena, CA (on CD-ROM), 2000] to assess the accuracy of the computer model. The data were obtained from four full-cone water atomizers, which were used to experimentally extract heat from a heated test piece. The spray experiment used different impaction distances, injection pressures, and wall temperatures. The heat transfer model predictions are compared to 18 different experimental conditions and reasonable agreement is obtained in many cases. The discrepancies in the other cases are partly attributed to assumptions made in the spray model. Deficiencies in the heat transfer model are identified in the conclusions.
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Manglik Raj M., Jog Milind A., Molecular-to-Large-Scale Heat Transfer With Multiphase Interfaces: Current Status and New Directions, Journal of Heat Transfer, 131, 12, 2009. Crossref
-
Abbasi Bahman, Kim Jungho, Development of a General Dynamic Pressure Based Single-Phase Spray Cooling Heat Transfer Correlation, Journal of Heat Transfer, 133, 5, 2011. Crossref
-
Pereira Ricardo Hernandez, Filho Enio Pedone Bandarra, Braga Sergio Leal, Parise José Alberto Reis, Nucleate Boiling in Large Arrays of Impinging Water Sprays, Heat Transfer Engineering, 34, 5-6, 2013. Crossref
-
Turner M R, Healey J J, Sazhin S S, Piazzesi R, Wave packet analysis and break-up length calculations for an accelerating planar liquid jet, Fluid Dynamics Research, 44, 1, 2012. Crossref
-
Herbert Stefan, Gambaryan-Roisman Tatiana, Stephan Peter, Influence of the governing dimensionless parameters on heat transfer during single drop impingement onto a hot wall, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 432, 2013. Crossref
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Liang Gangtao, Mudawar Issam, Review of spray cooling – Part 1: Single-phase and nucleate boiling regimes, and critical heat flux, International Journal of Heat and Mass Transfer, 115, 2017. Crossref