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New Formulation for Semi-Empirical Correlations for Penetration Jets

¹ Centro Tecnológico da Marinha em São Paulo, São Paulo, Brazil
² Centro Tecnológico da Marinha em São Paulo, São Paulo, Brazil
³ Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brazil
⁴ Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brazil
⁵ Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brazil
⁶ Instituto de Pesquisas Energéticas e Nucleares, São Paulo, Brazil

World Journal of Nuclear Science and Technology·Volume 09 (2019)·Pages 96–111·Published 6 March 2019·DOI10.4236/wjnst.2019.92007

Abstract

Correlations for the extension of a water vapor jet injected in a liquid pool were historically proposed considering the mass flux (kg/m 2 /s) as a constant. The results were satisfactory, however adjusting the values by linear regression. Although, it presents the following drawbacks: 1) the formulation is only valid for the specific range of data for what it was created; 2) it does not allow the analytical evaluation of the heat transfer coefficient from the extension equation. This paper proposes a new formulation for the calculation of the mass flux, in such a way to remove both of these drawbacks.

KeywordsDirect Contact CondensationVapor JetSteam JetSteam Mass FluxVapor CavityReynolds NumberJet RadiusRate of CondensationNon-Dimensional Jet LengthLiquid PoolDimensionless Transport ModulusCondensation Driving Potential

Kerney, P.J., Faeth, G.M. and Olson, D.R. (1972) Penetration Characteristics of a Submerged Steam Jet. AIChE Journal, 18, 548-553. https://doi.org/10.1002/aic.690180314
van Wissen, R.J.E., Schreel, K.R.A.M., van der Geld, C.W.M. and Wieringa, J. (2004) Turbulence Production by a Steam-Driven Jet in a Water Vessel. International Journal of Heat and Fluid Flow, 25, 173-179. https://doi.org/10.1016/j.ijheatfluidflow.2003.11.013
Weimer, J.C., Faeth, G.M. and Olson, D.R. (1973) Penetration of Vapor Jets Submerged in Subcooled Liquids. AIChE Journal, 19, 552-558. https://doi.org/10.1002/aic.690190321
Chun, M.-H., Kim, Y.-S. and Park, J.-W. (1996) An Investigation of Direct Condensation of the Steam Jet in Subcooled Water. International Communications in Heat and Mass Transfer, 23, 947-958. https://doi.org/10.1016/0735-1933(96)00077-2
Gulawani, S.S., Joshi, J.B., Shah, M.S., RamaPrasad, C.S. and Shukla, D.S. (2006) CFD Analysis of Flow Pattern and Heat Transfer in Direct Contact Steam Condensation. Chemical Engineering Science, 61, 5204-5220. https://doi.org/10.1016/j.ces.2006.03.032
Kang, H.-S. and Song, C.-H. (2008) CFD Analysis for Thermal Mixing in a Subcooled Water Tank under a High Steam Mass Flux Discharge Condition. Nuclear Engineering and Design, 238, 492-501. https://doi.org/10.1016/j.nucengdes.2007.02.044
Shah, A., Chughtai, I.R. and Ham, M. (2010) Numerical Simulation of Direct-Contact Condensation from a Supersonic Steam Jet in Subcooled Water. Chinese Journal of Chemical Engineering, 18, 577-587. https://doi.org/10.1016/S1004-9541(10)60261-3
Wu, X.-Z., Yan, J.-J., Shao, S.-F., Cao, Y. and Liu, J.-P. (2007) Experimental Study on the Condensation of Supersonic Steam Jet Submerged in Quiescent Subcooled Water: Steam Plume Shape and Heat Transfer. International Journal of Multiphase Flow, 33, 1296-1307. https://doi.org/10.1016/j.ijmultiphaseflow.2007.06.004
Xu, Q., Guo, L., Zou, S., Chen, J. and Zhang, X. (2013) Experimental Study on Direct Contact Condensation of a Stable Steam Jet in Water Flow in a Vertical Pipe. International Journal of Heat and Mass Transfer, 66, 808-817. https://doi.org/10.1016/j.ijheatmasstransfer.2013.07.083
Chong, D.-T., Zhao, Q.-B., Yuan, F., Wang, W., Chen, W. and Yan, J.-J. (2015) Research on the Steam Jet Length with Different Nozzle Structures. Experimental Thermal and Fluid Science, 64, 134-141. https://doi.org/10.1016/j.expthermflusci.2015.02.015

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New Formulation for Semi-Empirical Correlations for Penetration Jets

Abstract

References (14)