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

Conference · Sat Jan 01 00:00:00 EST 1983

OSTI ID:5517662

Chung, H

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.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 5517662
• Report Number(s): CONF-8310166-2; ON: DE84003618
• Resource Relation: Conference: 54. shock and vibration symposium, Pasadena, CA, USA, 18 Oct 1983
• Country of Publication: United States
• Language: English

Related Subjects

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