06 آبان 1400

علیرضا فیوض

مرتبه علمی:
نشانی: دانشکده مهندسی - گروه مهندسی عمران
تحصیلات: عمران
تلفن:
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان
مطالعه آزمایشگاهی انرژی جنبشی و توزیع نوسانات سرعت در قوس 180 درجه تند
نوع پژوهش مقالات در همایش ها
کلیدواژه‌ها
Reynolds Shear Stress, Turbulence Kinetic Energy, Flow Pattern, 180 Degree Sharp Bend, Vectrino Velocimeter.
پژوهشگران محمد واقفی (نفر اول) ، مریم اکبری (نفر دوم) ، علیرضا فیوض (نفر سوم)

چکیده

The Reynolds shear stress and Turbulent Kinetic Energy are two of the important parameters when predicting the turbulent flow pattern in river bends, because such parameters indicate flow structures, especially the secondary flows. Since the product of the velocity components' fluctuations in various directions can be used to show the Reynolds shear stress, this paper first addressed velocity fluctuations, then the distribution of turbulence kinetic energy. The experiments were conducted in a 180 degree sharp bend channel with a central curvature radius of 2 meters and a width of 1 meter in the hydraulic laboratory of Persian Gulf University using Vectrino velocimeter. The results demonstrated that the maximum value of turbulence kinetic energy occurred at the 85 degree cross section and the minimum value at the 20 degree. Also, the maximum values of the longitudinal and transverse velocity fluctuations occurred at the 70 degree cross section near the inner wall.