Pyramidal vortex breakers influences on the flow discharge of morning glory spillway
نویسندگان
چکیده
منابع مشابه
The effect of the vortex barker and stepped chamber hydraulic flow through morning glory spillway
In recent decades, many dams have been built or are under construction. Due to the high demand for water and soil erosion, increasing the need for dam construction in different regions are quite tangible. In 1900 the number of large dams, did not exceed 50. But in the 1950s to 1986 the number of large dams (over 15 meters), more than 39,000 were counted. The 70s dams has been increasing develop...
متن کاملEffect of Deflector and Aeration On the Discharge Coefficient of Submerged Flow of Morning Glory Spillways
Spillways are responsible for draining floods in dams. However, morning glory spillways are considered as free spillway type. In floods, a submerged flow is formed in their crest. This factor leads to severe pressure fluctuations in the shaft, suction and vibration of the structure and also reduces the spillway efficiency. Insufficient knowledge of the hydraulics of the submerged flow will be a...
متن کاملمطالعه آزمایشگاهی تأثیر تعداد و زاویه گرداب‌شکن بر مشخصات جریان در سرریز نیلوفری مربعی
Morning glory spillway is one of the spillways and used when it is not possible to use any other spillways. With the onset of submergence and flow loss, and intensification of circulation and vortexes, spillway performance decreases severely. With decreasing discharge coefficient, the height of water in the reservoir increases and the risk of dam damage, caused by the lack of spillway ability o...
متن کاملThe Study of Inlet Section on Flow Hydraulics in Zigzag-Morning Glory Spillways with Physical Modelling
Morning glory spillway is one of the spillways that used to passing of flood from high to low level. This spillway is used in the reservoir dams that are placed in narrow valleys and in many locations with high slope in reservoir walls. In the Morning glory spillways, the vortex flow can reduce discharge, discharge coefficient and the performance of spillway. The zigzag spillway, as another typ...
متن کاملMorning glory syndrome.
Morning glory syndrome is a congenital optic disc anomaly in which much of the excavated colobomatous optic disc is filled with glial tissue. Ocular complications may include strabismus, reduced visual acuity and retinal detachment and it may have systemic associations as in Aicardi's syndrome. A patient with monocular morning glory syndrome and reduced visual acuity is reported. The pattern re...
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ژورنال
عنوان ژورنال: Ain Shams Engineering Journal
سال: 2020
ISSN: 2090-4479
DOI: 10.1016/j.asej.2019.08.013