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Numerical Analysis for Flow Distribution inside a Fuel Assembly with Swirl-type Mixing Vanes
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 Title & Authors
Numerical Analysis for Flow Distribution inside a Fuel Assembly with Swirl-type Mixing Vanes
Lee, Gonghee; Shin, Andong; Cheong, Aeju;
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 Abstract
As a turbulence-enhancing device, a mixing vane installed at a spacer grid of the fuel assembly plays a role in improving the convective heat transfer by generating either swirl flow in the subchannels or cross flow between fuel rod gaps. Therefore, both configuration and arrangement pattern of a mixing vane are important factors that determine the performance of a mixing vane. In this study, in order to examine the flow distribution features inside fuel assembly with swirl-type mixing vanes used in benchmark calculation of OECD/NEA, simulations were conducted with commercial CFD software ANSYS CFX R.14. Predicted results were compared to data measured from MATiS-H (Measurement and Analysis of Turbulent Mixing in Subchannels-Horizontal) test facility. In addition, the effect of swirl-type mixing vanes on flow pattern inside the fuel assembly was described.
 Keywords
Computational fluid dynamics;Mixing vane;Rod bundle;Subchannel;Swirl-type;Turbulent flow;
 Language
Korean
 Cited by
 References
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