کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
661030 1458120 2010 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heat transfer performance and the transition to chaos of mixed convection around an isothermally heated sphere placed in a uniform, downwardly directed flow
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Heat transfer performance and the transition to chaos of mixed convection around an isothermally heated sphere placed in a uniform, downwardly directed flow
چکیده انگلیسی

This study aims to reveal the temporal and spatial heat transfer performance and the transition process from a steady axisymmetric separated flow to a chaotic flow of an isothermally heated sphere placed in a uniform, downwardly directed flow by experimentation and transient 3D numerical simulation. Experiments were carried out using air with a Grashof number of 3.3 × 105 and with several Reynolds numbers up to 1900. Four types of flow patterns appear showing that the chaotic flow around the sphere is a spatiotemporal chaos by the calculation of a set of Lyapunov exponents from the calculated time series of temperatures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 13–14, June 2010, Pages 2602–2614
نویسندگان
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