Heat and Mass Transfer from a Permeable Cylinder in a Porous Medium with Magnetic Field and Heat Generation/absorption Effects
نویسندگان
چکیده
We formulate the problem of coupled heat and mass transfer by natural convection from a horizontal cylinder embedded in a uniform porous medium in the presence of an external magnetic eld and internal heat generation or absorption effects. The cylinder surface is maintained at a constant temperature and a constant concentration and is permeable to allow for possible uid wall suction or blowing. The resulting governing equations are nondimensionalized and transformed into a nonsimilar form and then solved numerically by an implicit, iterative, nite-difference method. Comparisons with previously published work are performed and excellent agreement is obtained. A parametric study of the physical parameters is conducted and a representative set of numerical results for the stream function, temperature, concentration pro les, and the Nusselt and Sherwood numbers is illustrated graphically to show interesting features of the solutions.
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