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Автор: G.H.Yeoh, J.Y.Tu
Издательство: Nova Science Publishers, Inc.
Год издания: 2009
isbn: 1604569433
Количество страниц: 101
Язык: english
Формат: PDF
Размер: 0.76 Мб
Каталожный номер: 47689
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In the context of computational fluid dynamics (CFD), modeling low-pressure subcooled boiling flow is of particular significance. A review is provided in this article of the various numerical modeling approaches that have been adopted to handle subcooled boiling flow. The main focus in the analysis of such a challenging problem can be broadly classified according into two important categories: (i) Heat transfer and wall heat flux partitioning during subcooled boiling flow at the heated wall and (ii) Two-phase flow and bubble behaviors in the bulk subcooled flow away from the heated wall. For the first category, details of both empirical and mechanistic models that have been proposed in the literature are given. The enhancement in heat transfer during forced convective boiling attributed by the presence of both sliding and stationary bubbles, force balance model for bubble departure and bubble lift-off as well as the evaluation of bubble frequency based on fundamental theory depict the many improvements that have been introduced to the current mechanistic model of heat transfer and wall heat flux partitioning.
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