کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661142 1458123 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An investigation of a dual-reflection phenomenon of a natural convection in a three dimensional horizontal channel without Boussinesq assumption
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
An investigation of a dual-reflection phenomenon of a natural convection in a three dimensional horizontal channel without Boussinesq assumption
چکیده انگلیسی

An investigation of a dual-reflection phenomenon of a natural convection induced by a high temperature difference in a three dimensional horizontal channel is studied numerically. Because of a situation of high temperature difference, the Boussinesq assumption usually made in the natural convection problem is no longer available, the effects of the compressibility of fluid on all related factors must be considered. Solution methods of Roe, preconditioning and dual time stepping are appropriate for low speed compressible flow field and combined to solve the governing equations. For saving computation time, the computational process is parallel and 8 processors are used. At the aperture of the horizontal channel, the directions of fluid flows in the upper and lower regions are opposite which results in the reflection problems in the upper and lower regions induced by the large difference between the velocities of acoustic waves and fluids being completely different. The two different reflections phenomena occurring at the same aperture is conveniently named as a dual-reflection phenomenon which has never been investigated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 7–8, March 2010, Pages 1575–1585
نویسندگان
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