This study aims to better characterize the heat transfer and flow structure in fully developed nucleate boiling regime a semi-annular duct. Experiments with refrigerant HFE7000 were performed range of Reynolds numbers from 13 000 40 500, subcoolings close 15 ?C, for constant heating power, wall temperature rates (linear increase temperature). With flux is well predicted by Chen-type correlation...

The mechanical behaviour of the oxide film that develops at metal-air interface molten A356 aluminum alloy is investigated in relation to oxidation level. Based on two previous papers - first one focusing chemical aspects process liquid surface aluminum, second its characterization, present paper aims reconciling these approaches usually considered separately literature and proposes a stand-alo...