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Title: Leakage-flow induced vibrations of a chimney structure suspended in a liquid flow

Abstract

This paper presents the results of flow-induced vibration tests conducted to assess the vibration characteristics of a chimney structure suspended in a liquid flow. The test article is a full-scale model of a flow chimney used in a nuclear reactor as a part of reactor upper internals. Tests were performed by simulating all pertinent prototype conditions achievable in a laboratory environment. The test results show that there exists a fluid-elastic instability of the chimney motion which has a distinct lock-in phenomenon with respect to the flow rate. This unstable vibration is associated with the leakage-flow-modulated excitation through the small clearances between the chimney and its supports.

Authors:
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
5517662
Report Number(s):
CONF-8310166-2
ON: DE84003618
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 54. shock and vibration symposium, Pasadena, CA, USA, 18 Oct 1983
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 42 ENGINEERING; FLOW REGULATORS; MECHANICAL VIBRATIONS; REACTOR COOLING SYSTEMS; CONTROL ELEMENTS; FLUID FLOW; INSTABILITY; CONTROL EQUIPMENT; COOLING SYSTEMS; ENERGY SYSTEMS; EQUIPMENT; REACTOR COMPONENTS; 220200* - Nuclear Reactor Technology- Components & Accessories; 420400 - Engineering- Heat Transfer & Fluid Flow

Citation Formats

Chung, H. Leakage-flow induced vibrations of a chimney structure suspended in a liquid flow. United States: N. p., 1983. Web.
Chung, H. Leakage-flow induced vibrations of a chimney structure suspended in a liquid flow. United States.
Chung, H. 1983. "Leakage-flow induced vibrations of a chimney structure suspended in a liquid flow". United States. https://www.osti.gov/servlets/purl/5517662.
@article{osti_5517662,
title = {Leakage-flow induced vibrations of a chimney structure suspended in a liquid flow},
author = {Chung, H},
abstractNote = {This paper presents the results of flow-induced vibration tests conducted to assess the vibration characteristics of a chimney structure suspended in a liquid flow. The test article is a full-scale model of a flow chimney used in a nuclear reactor as a part of reactor upper internals. Tests were performed by simulating all pertinent prototype conditions achievable in a laboratory environment. The test results show that there exists a fluid-elastic instability of the chimney motion which has a distinct lock-in phenomenon with respect to the flow rate. This unstable vibration is associated with the leakage-flow-modulated excitation through the small clearances between the chimney and its supports.},
doi = {},
url = {https://www.osti.gov/biblio/5517662}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1983},
month = {Sat Jan 01 00:00:00 EST 1983}
}

Conference:
Other availability
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