Numerical analysis of pressure drop oscillations in parallel channels

被引：25

作者：

Chiapero, E. Manavela ^{[1
]}

Fernandino, M. ^{[1
]}

Dorao, C. A. ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, N-7491 Trondheim, Norway

来源：

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW | 2013年 / 56卷

关键词：

Two-phase flow instabilities; PDO; Parallel channels; Thermal capacity; 2-PHASE FLOW INSTABILITY; VERTICAL BOILING CHANNEL; UPFLOW SYSTEM; HEAT-TRANSFER; DYNAMIC INSTABILITIES; FORCED-CONVECTION; PIPES; TUBES;

D O I：

10.1016/j.ijmultiphaseflow.2013.05.010

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this study pressure drop oscillations in two parallel channels are analyzed taking into account the thermal capacity of the pipes. A different limit cycle than the one that takes place in a single channel system is found. During the instability one channel always follows the typical pressure drop oscillations limit cycle while the other channel oscillates always in the superheated vapor region. This behavior leads to very high wall temperatures at the outlet of the heated pipe. This undesirable situation with one channel operating in the superheated vapor region takes place also for the maldistributed stable solutions. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：15 / 24

页数：10

共 45 条

[21] AN EXPERIMENTAL INVESTIGATION OF THERMALLY INDUCED FLOW INSTABILITIES IN A CONVECTIVE BOILING UPFLOW SYSTEM [J].

LIU, HT ;

KAKAC, S .

WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS, 1991, 26 (06) :365-376

[22] CHARACTERISTICS OF TRANSITION BOILING AND THERMAL OSCILLATION IN AN UPFLOW CONVECTIVE BOILING SYSTEM [J].

LIU, HT ;

KAKAC, S ;

MAYINGER, F .

EXPERIMENTAL THERMAL AND FLUID SCIENCE, 1994, 8 (03) :195-205

[23]

Manavela Chiapero E, 2011, 14 INT TOP M NUCL RE, P251

[24]

Manavela Chiapero E, 2011, P ASME JSME KSME JOI, P10042

[25] Periodic oscillations in a horizontal single boiling channel with thermal wall capacity [J].

Mawasha, PR ;

Gross, RJ .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2001, 22 (06) :643-649

[26] EFFECT OF HEAT-TRANSFER AUGMENTATION ON 2-PHASE FLOW INSTABILITIES IN A VERTICAL BOILING CHANNEL [J].

MENTES, A ;

YILDIRIM, OT ;

GURGENCI, H ;

KAKAC, S ;

VEZIROGLU, TN .

WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS, 1983, 17 (03) :161-169

[27] Evaporation in parallel pipes-splitting characteristics [J].

Minzer, U ;

Barnea, D ;

Taitel, Y .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2004, 30 (7-8) :763-777

[28] Flow rate distribution in evaporating parallel pipes - modeling and experimental [J].

Minzer, Uri ;

Barnea, Dvora ;

Taitel, Yehuda .

CHEMICAL ENGINEERING SCIENCE, 2006, 61 (22) :7249-7259

[29] Direct steam generation in parallel pipes [J].

Natan, S ;

Barnea, D ;

Taitel, Y .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2003, 29 (11) :1669-1683

[30]

OZAWA M, 1979, B JSME, V22, P1113

← 1 2 3 4 5 →