نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانش آموخته دکتری گروه سازه های آبی دانشگاه شهیدچمران اهواز
2 استاد گروه سازه‌های آبی دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز
3 استاد گروه عمران دانشگاه شهید چمران اهواز
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
This Study reports on experiments concerning the boundary shear stress and boundary shear force distributions in a smooth rectangular channel. The boundary shear stresses were measured with a 4-mm outside diameter Preston tube in conjunction with a differential pressure transducer. The calibration curves of Patel (1965) were used to convert pressure reading to boundary shear stresses. Nonlinear regression-based equations are drive from experimental analysis to determine percentage of the total shear force carried by the walls and mean wall and bed shear stresses around wetted perimeter. The proposed equations compared to previous researches are shown to higher correlation coefficient and smaller standard deviation. Furthermore, single variable equations are introduced in the paper indeed an advantage compared to that of other studies.
کلیدواژه‌ها [English]
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