An Experimental study on Downward flow Onset of Flow Instability forrnNarrow rectangular channels in a pool

摘要

Under certain conditions, two-phase flow become outrnof control, therefore, it is of great concern in the designrnand operation of systems with heated channels cooled byrnsubcooled liquid flow. Especially, since so-called twophasernflow instabilities have possibility to cause heatrntransfer degradation and then it may lead mechanicalrndamages to heat transfer surface it should be avoided inrnsteady-state and transient conditions in considerations ofrnsafety.