Validation of methods for estimation of the heat flux into the liquid nitrogen pool from the concrete ground
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The vaporization velocity is one of the most important concepts in the study of the spread and vaporization of a flammable liquid pool because the pool spread and the pool vaporization interact with each other, and the vaporization velocity is the link. The numerical modeling of the vaporization velocity is determined by the heat flux into the liquid pool from the ground, and the heat flux can be determined by three models: the Inverse Heat Conduction Method (IHCM), the Boiling Regime Correlations (BRCs), and the assumption of Perfect Thermal Contact between the liquid and the ground surface (PTC). However, these methods have not been thoroughly validated against experimental results and compared with each other. In this work, the methods mentioned were validated against experimental results for a non-spreading pool on concrete ground, including the temperature inside the ground and the surface heat flux. It was found that (і) the IHCM can give a reliable prediction if the input and the time step are properly chosen, and (ii) the estimated heat flux based on the PTC generally agreed well with the experimental results, while that based on BRCs underestimated the results. This study might be beneficial for the development of spreading and vaporization models.
Abstract
The vaporization velocity is one of the most important concepts in the study of the spread and vaporization of a flammable liquid pool because the pool spread and the pool vaporization interact with each other, and the vaporization velocity is the link. The numerical modeling of the vaporization velocity is determined by the heat flux into the liquid pool from the ground, and the heat flux can be determined by three models: the Inverse Heat Conduction Method (IHCM), the Boiling Regime Correlations (BRCs), and the assumption of Perfect Thermal Contact between the liquid and the ground surface (PTC). However, these methods have not been thoroughly validated against experimental results and compared with each other. In this work, the methods mentioned were validated against experimental results for a non-spreading pool on concrete ground, including the temperature inside the ground and the surface heat flux. It was found that (і) the IHCM can give a reliable prediction if the input and the time step are properly chosen, and (ii) the estimated heat flux based on the PTC generally agreed well with the experimental results, while that based on BRCs underestimated the results. This study might be beneficial for the development of spreading and vaporization models.
참고문헌 (21)
- J. V. Beck, "Inverse Heat Conduction: Ill-Posed Problems" (1985), Wiley-Interscience
- J. V. Beck, "Inverse heat conduction problem : Sensitivity coefficient insights, filter coefficients, and intrinsic verification", International Journal of Heat and Mass Transfer, 97, pp.578~588 (2016)
- R. Li, "Study of the conductive heat flux from concrete to liquid nitrogen by solving an inverse heat conduction problem", Journal of Loss Prevention in the Process Industries, 48, pp.48~54 (2017)
- R. Li, "Cryogenic quenching of rock using liquid nitrogen as a coolant : Investigation of surface effects", International Journal of Heat and Mass Transfer, 119, pp.446~459 (2018)
- R. Li, "Jet impingement boiling heat transfer from rock to liquid nitrogen during cryogenic quenching", Experimental Thermal and Fluid Science, 106, pp.255~264 (2019)
- R. Li, "Quenching and rewetting of rock in liquid nitrogen : Characterizing heat transfer and surface effects", International Journal of Thermal Sciences, 148 (2020)
- X. Shao, "Experimental study of transient liquid nitrogen jet impingement boiling on concrete surface using inverse conduction problem algorithm", Process Safety and Environmental Protection, 147, pp.45~54 (2021)
- Heat Transfer in Condensation and Boiling, "S. S. Kutateladze", U.S. Atomic Energy Commission, Technical Information Service, ~ (1959)
- E. K. Kalinin, "Heat transfer in transition boiling of cryogenic liquids", Advances in Cryogenic Engineering, 21, pp.273~277 (1975)
- P. J. Berenson, "Film-boiling heat transfer from a horizontal surface", Journal of Heat Transfer, 83(3), pp.351~356 (1961)
- B. P. Breen, "Effect of diameter of horizontal tubes on film boiling heat transfer", Chemical Engineering Progress, 58(7), pp.67~72 (1962)
- L. -D. Nguyen, "An evaluation of vaporization models for a cryogenic liquid spreading on a solid ground", International Journal of Heat and Mass Transfer, 146, pp.118848~ (2020)
- O. Basha, "Modeling of pool spreading of LNG on land", Journal of Loss Prevention in the Process Industries, 30, pp.307~314 (2014)
- K. Verfondern, "Pool spreading and vaporization of liquid hydrogen", International Journal of Hydrogen Energy, 32(13), pp.2106~2117 (2007)
- F. Briscoe, "Spread and evaporation of liquid", Progress in Energy and Combustion Science, 6(2), pp.127~140 (1980)
- P. K. Raj, "Models for cryogenic liquid spill behavior on land and water", Journal of Hazardous Materials, 5(1-2), pp.111~130 (1981)
- L. -D. Nguyen, "Validation of numerical models for cryogenic-liquid pool spreading and vaporization on solid ground", International Journal of Heat and Mass Transfer, 128, pp.817~824 (2019)
- L. -D. Nguyen, "Vaporization of the non-spreading cryogenic-liquid pool on the concrete ground", International Journal of Heat and Mass Transfer, 163, pp.120464~ (2020)
- M. N. Özisik, "Heat Conduction" (1980), John Wiley &Sons Inc
- H. S. Carslaw, "Conduction of Heat in Solids" (1959), Clarendon Press
- Boiling Heat Transfer for Oxygen, Nitrogen, Hydrogen, and Helium, "E. G. Brentari", U. S. Department of Commerce National Bureau of Standards, ~, pp.Technical Note 317 (1965)