Numerical evaluation of discharge coefficient and energy dissipation of flow over a stepped morning glory spillway
المؤلفون المشاركون
al-Khamis, Muhammad
Ranjbar Malekshah, Muhsin
Sabbagh Yazdi, Said Rida
المصدر
Journal of Engineering Research
العدد
المجلد 9، العدد 2 (30 يونيو/حزيران 2021)، ص ص. 60-80، 21ص.
الناشر
جامعة الكويت مجلس النشر العلمي
تاريخ النشر
2021-06-30
دولة النشر
الكويت
عدد الصفحات
21
التخصصات الرئيسية
الملخص EN
A morning glory spillway usually has an ogee shaped crest and conveys spill water flow to its downstream vertical shaft followed by a horizontal tunnel.
the ungated morning glory spillways should convey variable discharges, which nonlinearly depends on the reservoir water elevation.
the variation of discharge for unit length of the crest may cause challenges on design of downstream crest curve (which affects coefficient of discharge and downstream crest negative pressure).
furthermore, formation of a horizontal vortex flow affects the spillway discharge.
in this paper, in order to resolve these problems by energy dissipation and water flow aeration, variable size steps are mapped to downstream of the curved ogee crest of morning glory spillway.
a finite volume base numerical flow solver is used to investigate the effects of the considered configurations on the hydraulic design parameters.
in this work, having verified the pressure and aeration of the flow over an ordinary stepped spillway, the characteristics of flow over geometry of an ordinary morning glory spillway, as well as stepped spillway, are modelled and compared to the available measurements on laboratory hydraulic models.
finally, an existing ordinary morning glory spillway is computationally modelled by considering an alternative design of variable sized steps at downstream crest (by mapping their edges to the ordinary profile of the morning glory spillway).
the stepped morning glory spillway alternatives are numerically simulated for various flow rates, and the computed discharge coefficients and energy dissipations are compared with simulation results for ordinary morning glory spillway of the case.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Khamis, Muhammad& Sabbagh Yazdi, Said Rida& Ranjbar Malekshah, Muhsin. 2021. Numerical evaluation of discharge coefficient and energy dissipation of flow over a stepped morning glory spillway. Journal of Engineering Research،Vol. 9, no. 2, pp.60-80.
https://search.emarefa.net/detail/BIM-1494835
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Khamis, Muhammad…[et al.]. Numerical evaluation of discharge coefficient and energy dissipation of flow over a stepped morning glory spillway. Journal of Engineering Research Vol. 9, no. 2 (Jun. 2021), pp.60-80.
https://search.emarefa.net/detail/BIM-1494835
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Khamis, Muhammad& Sabbagh Yazdi, Said Rida& Ranjbar Malekshah, Muhsin. Numerical evaluation of discharge coefficient and energy dissipation of flow over a stepped morning glory spillway. Journal of Engineering Research. 2021. Vol. 9, no. 2, pp.60-80.
https://search.emarefa.net/detail/BIM-1494835
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 79-80
رقم السجل
BIM-1494835
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر