期刊刊名：南台學報 　 卷期：39卷3期

篇名出版日期：2014年9月1日

作者：鄭慶陽,Ching-Yang Cheng

語言：English

關鍵字：Double Diffusion, Free Convection, Inclined Plate, Porous Medium, Cubic Spline Collocation Method,雙重擴散,自然對流,傾斜板,多孔介質,三次樣條配置法

被點閱次數：1次

閱讀時間：7sec

摘要：
This work studies the double-diffusive free convection over arbitrarily inclined plates in fluid saturated porous media with nonuniform surface temperature and concentration. The governing equations are transformed into a set of nonsimilar differential equations, and the obtained boundary layer equations are then solved by the cubic spline collocation method. The heat and mass transfer characteristics are presented as functions of surface temperature exponent, surface concentration exponent, inclination variable, Lewis number, and buoyancy ratio. Results show that an increase in the Lewis number leads to a decrease the local Nusselt number and to increase the local Sherwood number. Moreover, increasing the buoyancy ratio tends to increase both the local Nusselt number and the local Sherwood number. For the positive inclination, as the inclination variable increases, the local Nusselt number and the local Sherwood number first decrease, reach minima, and then increase. The minima are where the tangential and normal components of buoyancy force are comparable.

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