09 فروردین 1403
سيدشاكر هاشمي

سیدشاکر هاشمی

مرتبه علمی: استادیار
نشانی: دانشکده مهندسی - گروه مهندسی عمران
تحصیلات: دکترای تخصصی / عمران
تلفن: -
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان Effects of distance between the T-shaped spur dikes on flow and scour patterns in 90 bend using the SSIIM model
نوع پژوهش مقالات در نشریات
کلیدواژه‌ها
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مجله Ain Shams Engineering Journal
شناسه DOI
پژوهشگران محمد واقفی (نفر اول) ، یاسر صفرپور بالاجورشری (نفر دوم) ، سیدشاکر هاشمی (نفر سوم)

چکیده

In this paper, flow and scour patterns resulted from the installation of two T-shaped spur dikes were evaluated in a 90° bend under clear water conditions. The submerged and non-submerged spur dikes were modeled at different locations in the bend using the numerical model. Based on the dikes’ location and submergence, different scour holes on the channel bed were formed. For all models, the maximum secondary flow power occurs at the upstream of the first spur dike and the maximum sedimentation occurs at the end of the inner bank. The maximum scour depth generally occurs at the tip of the first dike wing. The space between the spur dikes should not be more than 5 times of the dike length. In the submerged mode, the maximum scour depth decreased to 22% compared to the non-submerged mode one. Moreover, the location of sedimentation is a little further away from the bend end.