کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
652397 885019 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The varying effect of natural convection on shear stress rate on cylindrical surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
The varying effect of natural convection on shear stress rate on cylindrical surfaces
چکیده انگلیسی

In a dynamic weighing gas mass flow measurement, the gas mass flow rate is continuously determined by weighing a gas mass loss from a gas cylinder as a function of time. In this measurement method, the temperature difference between the wall of the gas cylinder and ambient air cannot be avoided. Due to natural convection flow, a shear stress appears on the wall of the cylinder. Because of the dynamic nature of the method, the shear stress rate varies as a function of time during the measurement period. In this paper, the magnitude and effect of the variable shear stress was studied theoretically and experimentally. Obtained results showed good agreement between the theory and experiments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 32, Issue 2, November 2007, Pages 459–466
نویسندگان
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