Experimental investigation of natural circulation instability in a BWR-type small modular reactor

被引：32

作者：

Shi, Shanbin ^{[1
]}

Schlegel, Joshua P. ^{[1
,2
]}

Brooks, Caleb S. ^{[1
,3
]}

Lin, Yu-Chen ^{[1
]}

Eoh, Jaehyuk ^{[1
,4
]}

Liu, Zhuo ^{[1
,5
]}

Zhu, Qingzi ^{[1
]}

Liu, Yang ^{[6
]}

Hibiki, Takashi ^{[1
]}

Ishii, Mamoru ^{[1
]}

机构：

[1] Purdue Univ, Sch Nucl Engn, W Lafayette, IN 47907 USA

[2] Missouri Univ Sci & Technol, Dept Min & Nucl Engn, Rolla, MO 65409 USA

[3] Univ Illinois, Dept Nucl Plasma & Radiol Engn, Urbana, IL 61801 USA

[4] Korea Atom Energy Res Inst, Taejon 305353, South Korea

[5] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 10084, Peoples R China

[6] Virginia Tech, Dept Mech Engn, Blacksburg, VA 24061 USA

来源：

PROGRESS IN NUCLEAR ENERGY | 2015年 / 85卷

关键词：

Flow instability; NMR; Natural circulation test facility; Startup tests; Pressurized startup procedures;

D O I：

10.1016/j.pnucene.2015.06.014

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The Purdue NMR (Novel Modular Reactor) represents a BWR-type small modular reactor with a significantly reduced reactor pressure vessel (RPV). Specifically, the NMR is one third the height and area of a conventional BWR RPV with an electrical output of 50 MWe. Experiments are performed in a well-scaled test facility to investigate the thermal hydraulic flow instabilities during the startup transients for the NMR. The scaling analysis for the design of natural circulation test facility uses a three-level scaling methodology. Scaling criteria are derived from non-dimensional field and constitutive equations. Important thermal hydraulic parameters, e.g. system pressure, inlet coolant flow velocity and local void fraction, are analyzed for slow and fast normal startup transients. Flashing instability and density wave oscillation are the main flow instabilities observed when system pressure is below 0.5 MPa. And the flashing instability and density wave oscillation show different type of oscillations in void fraction profile. Finally, the pressurized startup procedure is recommended and tested in current research to effectively eliminate the flow instabilities during the NMR startup transients. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：96 / 107

页数：12

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