Published 1987 | Version v1
Book Metadata-only

Annular flow induced vibration associated with on-load refuelling of advanced gas cooled reactors

Creators

  • 1. Central Electricity Generating Board, Berkeley (UK). Berkeley Nuclear Labs.
  • 2. National Nuclear Corp. Ltd., Risley (UK)
  • 3. Central Electricity Generating Board, Southampton (UK). Marchwood Engineering Labs.
  • 4. UKAEA Windscale Nuclear Power Development Labs.

Description

On-load refuelling of Advanced Gas Cooled Reactors results in a long, slender, articulated fuel assembly being suspended within a fuel channel, up which flows the high density gaseous coolant. The gas flow in the fuel assembly-channel annulus can cause vibration of the fuel assembly. This paper reports on continuing studies of this phenomenon. In particular it outlines the latest findings on the excitation mechanism, flow instabilities in an annular diffuser; successful developments in finite element modelling of the fuel assembly vibration which now include flow effects and non linearities caused by fuel assembly-channel impact; and finally experimental demonstration of the beneficial effect of introducing friction dampers into the fuel assembly. (author)

Additional details

Publishing Information

Publisher
British Hydromechanics Research Association, Fluid Engineering Centre.
Imprint Place
Cranfield (UK)
ISBN
0 947711 25 2
Imprint Title
Proceedings of the international conference on flow induced vibrations
Imprint Pagination
614 p.
Journal Page Range
p. 531-541.

Conference

Title
International conference on flow induced vibrations.
Dates
12-14 May 1987.
Place
Bowness-on-Windermere (UK).

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
19095938
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S42: ENGINEERING;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AGR TYPE REACTORS; ANNULAR SPACE; DAMPING; FLUID-STRUCTURE INTERACTIONS; FUEL ASSEMBLIES; FUEL CHANNELS; GAS FLOW; INSTABILITY; MECHANICAL VIBRATIONS; NONLINEAR PROBLEMS; REACTOR FUELING
Descriptors DEC
CONFIGURATION; ENRICHED URANIUM REACTORS; FLUID FLOW; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; REACTOR CHANNELS; REACTOR COMPONENTS; REACTORS