Study on the flow-pattern-transition instability in a natural circulation heavy water moderated boiling light water cooled reactor

被引：23

作者：

Nayak, AK ^{[1
]}

Vijayan, PK ^{[1
]}

Jain, V ^{[1
]}

Saha, D ^{[1
]}

Sinha, RK ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Reactor Engn Div, Bombay 40085, Maharashtra, India

来源：

NUCLEAR ENGINEERING AND DESIGN | 2003年 / 225卷 / 2-3期

关键词：

D O I：

10.1016/S0029-5493(03)00153-5

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：

A mathematical model has been developed to study the flow pattern transition instability which may occur in a boiling two-phase system. The model considers flow pattern transition criteria for vertical upward and horizontal flow in pipes to identify the flow pattern transition and flow pattern specific pressure drop models. It also considers the drift flux model to estimate the void fraction in the two-phase region. The model has been applied to predict the flow pattern transition instability in a natural circulation heavy water moderated boiling light water cooled reactor. It is found that the instability characteristics is similar to that of the Ledinegg-type instability. However, the number of multiple steady states for a given operating power can be much larger in the flow pattern transition instability as compared to that of the Ledinegg-type instability. Stability maps were plotted and compared for both the flow pattern transition instability and that of the Ledinegg-type instability. The influence of various geometric and operating parameters on this instability were investigated. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：159 / 172

页数：14

共 18 条

[1]

ANDEEN GB, 1969, T ASME, V90, P211

[2] Flow excursion instability in downward flow systems Part I. Single-phase instability [J].

Babelli, I ;

Ishii, M .

NUCLEAR ENGINEERING AND DESIGN, 2001, 206 (01) :91-96

[3]

BOURE JA, 1973, NUCL ENG DES, V25, P165, DOI 10.1016/0029-5493(73)90043-5

[4]

CHEXAL VK, 1973, AICHE S SER, V69, P37

[5] A slug-churn flow model for small-diameter airlift pumps [J].

deCachard, F ;

Delhaye, JM .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1996, 22 (04) :627-649

[6] MODEL FOR GAS-LIQUID SLUG FLOW IN HORIZONTAL AND NEAR HORIZONTAL TUBES [J].

DUKLER, AE ;

HUBBARD, MG .

INDUSTRIAL & ENGINEERING CHEMISTRY FUNDAMENTALS, 1975, 14 (04) :337-347

[7] Calculation of two-phase pressure drop for vertical upflow in narrow passages by means of a flow pattern specific model [J].

Holt, AJ ;

Azzopardi, BJ ;

Biddulph, MW .

CHEMICAL ENGINEERING RESEARCH & DESIGN, 1999, 77 (A1) :7-15

[8] EXPERIMENTAL SIMULATION STUDY ON START-UP OF THE 5 MW NUCLEAR HEATING REACTOR [J].

JIANG, SY ;

YAO, MS ;

BO, JH ;

WU, SR .

NUCLEAR ENGINEERING AND DESIGN, 1995, 158 (01) :111-123

[9]

Kakac S., 1985, J PURE APPL SCI, V18, P171

[10] LINEAR-ANALYSIS OF FLOW INSTABILITIES IN AN OPEN 2-PHASE NATURAL CIRCULATION LOOP [J].

LEE, SY ;

LEE, DW .

NUCLEAR ENGINEERING AND DESIGN, 1991, 128 (03) :317-330

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