کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9692902 1458853 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A direct method to calculate the heat transfer coefficient of steady similar boundary layer flows induced by continuous moving surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
A direct method to calculate the heat transfer coefficient of steady similar boundary layer flows induced by continuous moving surfaces
چکیده انگلیسی
The heat transfer coefficient mentioned in the title is calculated in this paper without to know the solution of the corresponding boundary value problem (neither in an explicit nor in an implicit form). This “direct method” makes use of a slightly modified form of the Merkin transformation which reverses the role of the dimensionless stream function f from that of an “old” dependent variable to one of a “new” independent variable and then gives the formal solution for the velocity and temperature profiles as a power series of 1−f/f∞ (where f∞ denotes the dimensionless entrainment velocity). The series solutions yield for f=0 explicit analytical expressions for the skin friction and the heat transfer coefficient of the flow. Owing to a formal mathematical analogy, the results also apply to the free convection boundary layer flows from vertical surfaces adjacent to fluid saturated porous media.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 44, Issue 3, March 2005, Pages 245-254
نویسندگان
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