Numerical Studies of Liquid Properties Effect on The Inception of Flooding in a Model of 1/30 Hot Leg PWR

Rafid Zulfiadib, Deendarlianto Deendarlianto

Abstract


An operation of nuclear power plant such as Pressurized Water Reactor (PWR) requires a high standard of safety management. In order to prevent the accidental scenario such as Loss of Coolant Accident (LOCA), the characteristic of flooding regime during CCFL should be investigated. This present study covers a numerical simulation on the effect of liquid properties during the inception of flooding or CCFL in a model of 1/30 hot leg PWR. Transient numerical simulations are performed using ANSYS Fluent 2020 R2 software with the Volume of Fluid (VOF) method to model a counter-current two-phase flow in the hot leg pipe. The geometry used is the German Konvoi type with a scale of 1/30. The diameter and the length of the hot leg are D = 25.4 mm and L = 455 mm respectively, resulting in a ratio of L/D = 17.91. The gas fluid used is air while the liquid fluid used is distilled water with the addition of %wt glycerin 40% and 60%. The results showed that the increase in liquid viscosity caused flooding initiation to occur at lower gas superficial velocities. While a decrease in surface tension causing the flooding to occur at lower gas flow rates

Keywords: Counter Current Flow Limitation, Onset of Flooding, Pressurized Water Reactor, VOF, CICSAM


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References


phenomenon. Annals of Nuclear Energy, 38(9), 1975-1819. https://doi.org/10.1016/j.anucene.2011.04.021

Astyanto, A. H., Indarto, Kirkland, K. V., & Deendarlianto. (2022). An experimental study on the effect of liquid properties on the counter-current flow limitation (CCFL) during gas/liquid counter-current two-phase flow in a 1/30 scaled-down of Pressurized Water Reactor (PWR) hot leg geometry. Nuclear Engineering and Design, 399(2), 112052. https://doi.org/10.1016/j.nucengdes.2022.112052

Deendarlianto, Höhne, T., Lucas, D., Vallée, C., dan Zabala G., 2011, CFD studies on the phenomena around counter-current flow limitations of gas/liquid two-phase flow in a model of a PWR hot leg, Nuclear Engineering Design, 241(12), hal. 5138–5148. https://doi.org/10.1016/j.nucengdes.2011.08.071

Deendarlianto, Höhne, T., Lucas, D., & Vierow, K., 2012, Gas-liquid countercurrent two-phase flow in a PWR hot leg: A comprehensive research review, Nuclear Engineering and Design, 243(2), 214–233. https://doi.org/10.1016/j.nucengdes.2011.11.015

Kinoshita, I., Nriai, T., Tomiyama, A., Lucas, D., & Murase, M., 2011, Effects of Liquid Properties on CCFL in a Scaled-Down Model of a PWR Hot Leg, Journal of Power and Energy Systems, 5(3), 316–329. https://doi.org/10.1299/jpes.5.316

Ousaka, A/, Kariyasaki, A., & Fukano, T. (2006). Prediction of flooding gas velocity in gas-liquid counter-current two-phase flow in inclined pipes. Nuclear Engineering and Design, 236(12), page 1282-1292. https://doi.org/10.1016/j.nucengdes.2005.12.001

Pantzali, M. N., Mouza, A. A., & Paras, S. V. (2007). Study of hydrodynamic characteristics of the liquid layer during counter- current flow in inclined small diameter tubes: the effect of liquid properties. 6th International Conference on Multiphase Flow, Leipzig, Germany., July.

Suzuki, S., & Ueda, T., 1977, Behaviour of liquid films and flooding in counter-current twophase flow-Part 1, Flow in circular tubes, International Journal of Multiphase Flow, 3(6), 517– 532.

Zapke, A. dan Kröger, D. G., 1996, The influence of fluid properties and inlet geometry on flooding in vertical and inclined tubes, International Journal of Multiphase Flow, 22(3), page. 461–472.


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