Preprint Article Version 1 This version is not peer-reviewed

A DNBR Analysis to Patterns of Subchannel Control Volume

Version 1 : Received: 16 September 2019 / Approved: 17 September 2019 / Online: 17 September 2019 (06:17:27 CEST)

How to cite: Kim, B.; Moon, K.; Kim, K.; Lim, J. A DNBR Analysis to Patterns of Subchannel Control Volume. Preprints 2019, 2019090183 (doi: 10.20944/preprints201909.0183.v1). Kim, B.; Moon, K.; Kim, K.; Lim, J. A DNBR Analysis to Patterns of Subchannel Control Volume. Preprints 2019, 2019090183 (doi: 10.20944/preprints201909.0183.v1).

Abstract

The sensitivity of DNBR values to approaches of subchannel control volume selection has been investigated for the TS01 and TS03 out of HIPER17 CHF tests. In rod bundle analysis, most of the subchannel analyses used the coolant-centered subchannel nodal layout. But, it has been known that the rod-centered subchannel analysis showed good results for high quality critical heat flux. In this study, it was demonstrated that the rod-centered subchannel analysis showed more effective and conservative results than the coolant-centered subchannel analysis with the DNBR value, the quality, and the mass velocity. Also, it was verified that when the both results yielded from each subchannel analysis were compared, the subchannel locations at which DNBR occurred were similar.

Subject Areas

DNBR; Subchannel Control Volume; CHF; 5x5 rod bundle

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