Development of Research on Interfacial Area Transport
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概要
- 論文の詳細を見る
Interfacial area concentration and its transport model are quite important in two-fluid model analysis of gas-liquid two-phase flow, which is widely used for the thermal hydraulic analysis of nuclear reactors. Recent developments and the present status of research on interfacial area transport model were reviewed. The definition and rigorous formulation of interfacial area concentration were introduced. Based on this rigorous formulation, basic transport equations of interfacial area concentration were developed by several research groups. In the interfacial area transport equation, source and sink terms of interfacial area concentration are important, and detailed analyses of these terms were carried out, and constitutive equations based on bubble coalescence, bubble breakup, phase change, bubble expansion, and shrinkage due to pressure change were developed. These interfacial area transport equations and constitutive equations were installed in two-fluid model codes and the validities of these models were confirmed by experimental data. Experimental research studies on interfacial area concentration and its transport were also reviewed. Measurement methods of interfacial area concentration were reviewed and multiple-sensor probe methods were established and commonly used in experimental research. Considerable experimental works have been carried out for air–water two-phase flows, and detailed measurements of distributions on interfacial area concentration and their development in the flow direction were reported. For boiling two-phase flow, experimental works on interfacial area concentration and its transport have been carried out and data are being accumulated. These data are used for the validation of interfacial area transport models.
- 2010-01-01
著者
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Kataoka Isao
Department Of Mechanical Engineering Osaka University
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Kataoka Isao
Department Of Mechanical Engineering Graduate School Of Engineering Osaka University
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