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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

FLOW INSTABILITY AND CRITICAL HEAT FLUX IN A RIBBED ANNULUS

Get access (open in a dialog) DOI: 10.1615/IHTC10.1480
pages 575-580

Abstract

An experimental program has been conducted to determine the onset of flow instability point in a heated annulus, which is divided into four sub channels by non-conducting ribs. The onset of flow instability is identified by the minimum point in the pressure drop-velocity curve. Comparisons with a ribless annulus show that the presence of ribs increases the minimum point velocity. In addition, data are presented which show that under certain conditions premature CHF can be induced by the ribs.