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http://dx.doi.org/10.3795/KSME-B.2012.36.7.767

Numerical Study of Fluidic Device in APR1400 Using Free-Surface Model  

Lim, Sang-Gyu (Advanced Reactor Development Laboratory, KHNP Central Research Institute)
You, Sung-Chang (Advanced Reactor Development Laboratory, KHNP Central Research Institute)
Kim, Han-Gon (Advanced Reactor Development Laboratory, KHNP Central Research Institute)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.7, 2012 , pp. 767-774 More about this Journal
Abstract
A fluidic device (FD) has been adopted in the safety injection tanks (SITs) of APR1400. A flow control mechanism of the FD was used to vary the flow regime in the vortex chamber corresponding to the SITs water level. The flow regime in the vortex chamber has a different pressure loss from low to high in accordance with the SITs water level. Nitrogen at the top of the SIT could be released owing to inertia of discharge flow when changing from a high flow rate to a low flow rate. This phenomenon is important to design improvement perspective because it can affect the performance of the FD. This paper shows a result of a preliminary numerical study to obtain the transient data related to air release in the flow turn-down period using a two-fluid free-surface model provided from ANSYS CFX 13.0. In conclusion, there is no significant effect on the performance of the FD, though a small quantity of air is released during the flow turn-down period.
Keywords
CFD; Fluidic Device; Free-Surface;
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  • Reference
1 ANSYS, 2011, "CFX 13.0 User Guide," ANSYS SYSTEM
2 Chu, I.C., Song, C.H., Cho, B.H. and Park, J.K., 2008, "Development of Passive Flow Controlling Safety Injection Tank for APR1400," Nuclear Engineering and Design, Vol. 238, pp 200-206.   DOI   ScienceOn
3 Lim, S.G., Lee, S.H. and Kim, H.G., 2010, "Benchmark and Parametric Study of a Passive Flow Controller (Fluidic Device) for the Development of Optimal Designs using a CFD Code," Nuclear Engineering and Design, Vol. 240, pp 1139-1150.   DOI   ScienceOn
4 Shiraishi, T., Watakabe, H., Nakamori, N., Tabuchi, K. and Takayama, Y., 1994, "Characteristics of the Flow Controlled Accumulator," Nuclear Technology, Vol. 108, pp 181-183.   DOI
5 Takata, T., Ogino, T., Ishibashi, T. and Shiraishi, T., 2009, "CFD on Small Flow Injection of Advanced Accumulator in APWR," Mitsubishi Heavy Industries Technical Review, Vol. 46, pp 54-60.
6 Kim, H.G., 2000, "A Safety Injection System for Advanced Power Reactor 1400," Patent-10-2001-0076568, Korea.