پديد آورنده :
حسيني تشنيزي، زهرا
عنوان :
اثر پره هاي هادي مستغرق بر عملكرد سر ريزهاي چند وجهي مثلثي
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
سازه هاي آبي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
شانزده،104ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
منوچهر حيدرپور، سعيد اسلاميان
استاد مشاور :
اسماعيل لندي
توصيفگر ها :
عملكرد هيدروليكي , ضريب دبي جريان , جريان آزاد
تاريخ نمايه سازي :
1/3/92
استاد داور :
محمد شايان نژاد، عباس همت
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Abstract Weirs are hydraulic structures that used in flood transport adjust the water level flow measurement and drainage channels widely Use of labyrinth weirs is one of the most effective and economical way to increase the effective length of crest These spillways by a broken axe on the plan are defined The length of the crest in labyrinth weir is greater than normal weir Triangular labyrinth weir is more efficient than other labyrinth weirs The researchers found that performance of triangular labyrinth weir is reduced when the discharge increased In this study submerged guide vanes are used in upstream of the triangular labyrinth weir with 45 is labyrinth side weir included angle 3 widths for the submerged guide vanes are considered They are equal to one 2 and 3 centimeter These models have different configurations and used to the number one upto 6 vanes that situated the upstream overflow wall These tests have been done on free flow condition for 4 discharges About wider vanes use of two vanes on the elementary quarter axis and middle axis have lower discharge coefficient than one vane The highest percentage increase in discharge coefficient occurs at the highest discharge So the impact of the submerged guide vanes in high discharge is more This result is correspond to previous researches Second regardless of the width of the vane the model with one vane on the middle axis and the model with one vane on the elementary quarter axis and other vane on the last quarter axis with 18 34 increase in discharge coefficient are best models Water surface profiles show that the upstream head of the submerged guide vanes with 3 centimeter width is more than others The results of cross profiles showed that the upstream submerged guide vanes cause more fluctuations in water level Finally an optimal equation was offered to calculate the weir discharge coefficient of the triangular labyrinth weir with submerged guide vanes by SPSS software Key Words Triangular labyrinth weir Submerged guide vanes Hydraulic performance Discharge coefficient Free flow
استاد راهنما :
منوچهر حيدرپور، سعيد اسلاميان
استاد مشاور :
اسماعيل لندي
استاد داور :
محمد شايان نژاد، عباس همت
