MODELING OF TWO-PHASE FLOW STRUCTURE EVOLUTION IN SUBCOOLED NUCLEATE CONVECTIVE BOILING WITH COUPLING OF BUBBLE-TRACKING AND TWO-FLUID MODELS

被引：0
|
作者：
Kljenak, Ivo [1 ]
Koncar, Bostjan [1 ]
Strubelj, Luka [1 ]
Mavko, Borut [1 ]
机构：
[1] Jozef Stefan Inst, Reactor Engn Div, Ljubljana, Slovenia
来源：
HT2008: PROCEEDINGS OF THE ASME SUMMER HEAT TRANSFER CONFERENCE - 2008, VOL 2 | 2009年
关键词：
VOID FRACTION; HEAT-TRANSFER; LOW-PRESSURE; PARAMETERS; DEPARTURE; VELOCITY; ANNULUS; WATER;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A model of subcooled nucleate boiling flow in a vertical channel at low-pressure conditions is proposed. The model consists of a three-dimensional bubble-tracking model and a two-dimensional two-fluid model which are coupled off-line. By taking into account dynamic phenomena (liquid flow, bubble motion and interaction) and thermal phenomena (liquid heating, bubble nucleation and condensation), the model is able to simulate the gradual evolution of void fraction profiles along the boiling channel. The model is assessed by simulating experiments that were performed at Purdue University (USA) at atmospheric pressure in a vertical annulus with a central heating rod.
引用
收藏
页码：233 / 242
页数：10
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