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An experimental study on two-phase flow pattern in low pressure natural circulation system

Technical Report:

Abstract

An experimental study on two-phase flow pattern in the riser of low pressure natural circulation system was performed. The local differential pressure signal was analysed for flow pattern. It is considered that Sr f{center_dot}d/v can be used to distinguish different flow patterns and it has clear and definite physical meaning. Flow patterns at different inlet temperature with different system pressures (1.5 MPa, 0.24 MPa and 0.1 MPa) are described. It is considered that the flow pattern is only bubble flow without flow pattern change during the period of low quality density-wave instability at 1.5 MPa. There is no density-wave oscillation in the system, when flow pattern is in bubble-intermittent transition area. The effect of flash vaporization on stability at low pressure is discussed.
Authors:
Shaorong, Wu; Bing, Han; Lei, Zhou; Youjie, Zhang; Shengyao, Jiang; Xinxin, Wu [1] 
  1. Inst. of Nucl. Energy Technology, Tsinghua Univ. (China)
Publication Date:
Oct 01, 1991
Product Type:
Technical Report
Report Number:
CNIC-00560; TSHUNE-0026.
Reference Number:
SCA: 420400; PA: AIX-24:006838; SN: 93000931726
Resource Relation:
Other Information: PBD: Oct 1991
Subject:
42 ENGINEERING; NATURAL CONVECTION; BENCH-SCALE EXPERIMENTS; FLOW MODELS; AMPLITUDES; DENSITY; EXPERIMENTAL DATA; INSTABILITY; MEDIUM PRESSURE; TWO-PHASE FLOW; 420400; HEAT TRANSFER AND FLUID FLOW
OSTI ID:
10118910
Research Organizations:
China Nuclear Information Centre, Beijing, BJ (China)
Country of Origin:
China
Language:
Chinese
Other Identifying Numbers:
Other: ON: DE93612127; ISBN 7-5022-0598-5; TRN: CN9201779006838
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[12] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Shaorong, Wu, Bing, Han, Lei, Zhou, Youjie, Zhang, Shengyao, Jiang, and Xinxin, Wu. An experimental study on two-phase flow pattern in low pressure natural circulation system. China: N. p., 1991. Web.
Shaorong, Wu, Bing, Han, Lei, Zhou, Youjie, Zhang, Shengyao, Jiang, & Xinxin, Wu. An experimental study on two-phase flow pattern in low pressure natural circulation system. China.
Shaorong, Wu, Bing, Han, Lei, Zhou, Youjie, Zhang, Shengyao, Jiang, and Xinxin, Wu. 1991. "An experimental study on two-phase flow pattern in low pressure natural circulation system." China.
@misc{etde_10118910,
title = {An experimental study on two-phase flow pattern in low pressure natural circulation system}
author = {Shaorong, Wu, Bing, Han, Lei, Zhou, Youjie, Zhang, Shengyao, Jiang, and Xinxin, Wu}
abstractNote = {An experimental study on two-phase flow pattern in the riser of low pressure natural circulation system was performed. The local differential pressure signal was analysed for flow pattern. It is considered that Sr f{center_dot}d/v can be used to distinguish different flow patterns and it has clear and definite physical meaning. Flow patterns at different inlet temperature with different system pressures (1.5 MPa, 0.24 MPa and 0.1 MPa) are described. It is considered that the flow pattern is only bubble flow without flow pattern change during the period of low quality density-wave instability at 1.5 MPa. There is no density-wave oscillation in the system, when flow pattern is in bubble-intermittent transition area. The effect of flash vaporization on stability at low pressure is discussed.}
place = {China}
year = {1991}
month = {Oct}
}