Experimental study of water film flow on large vertical and inclined flat plate

被引：37

作者：

Yu, Y. Q. ^{[1
,3
]}

Cheng, X. ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, Shanghai 200240, Peoples R China

[2] Inst Nucl & Energy Technol, Res Ctr Karlsruhe, D-76021 Karlsruhe, Germany

[3] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA

来源：

PROGRESS IN NUCLEAR ENERGY | 2014年 / 77卷

关键词：

PCCS; Water film; Flat plate; Solitary wave; Inclined plate; LIQUID; WAVES; LAYER; WALL; THIN;

D O I：

10.1016/j.pnucene.2014.07.001

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：

Free falling water film flow is widely applied in many industrial fields, including the PCCS (Passive Containment Cooling System) of the Generation III nuclear power plant. This paper describes an experimental study of free falling water film flow on a vertical and an inclined flat plate (2 x 5 m and 0.4 x 5 m). A capacitance probe and high-speed camera were used to capture the characteristics of film flow with different Reynolds (50 similar to 3600). Many statistical variables of the film flow are presented, such as film thickness, wave length, wave frequency, and wave velocity etc. The test data are also compared with Nusselt theory and some empirical correlations from other researches. The effect of Reynolds number and inclination of the plate on film flow are studied. Three transition points which indicate different flow mechanism changes are found by analyzing different statistical film flow variables. With the increase of Reynolds number, the solitary waves of film flow develop from low speed waves of high frequency and short wave length to high speed waves of low frequency and long wave length. Empirical correlations of (delta) over bar, delta(min), delta(max), delta(sub), delta(p), U-wave of film flow on large flat plate are obtained. It could be applied to the safety analysis program for PCCS. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：176 / 186

页数：11

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