Air-water flooding in a 90 degree elbow with a slightly inclined lower leg

Abstract

Experimental results of the effect of slight inclinations of the lower leg of an elbow on its flooding limit in countercurrent air-water flow are presented. For a given water flow, an elbow with a slightly upwardly inclined lower leg requires much less air flow to cause flooding than the same elbow with a horizontal leg, whereas an elbow with a slightly downwardly inclined lower leg requires more. The implications of the results of the present work in the analysis of certain


postulated upset conditions in a CANDU heat transport system are discussed.