Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Mahmood Shafai-Bajestan"'
Publikováno v:
Ain Shams Engineering Journal, Vol 12, Iss 1, Pp 381-391 (2021)
Flip buckets are among one of the most common types of energy dissipaters, especially for dams. The scouring phenomenon occurs when falling jets hit the river bed, and A-Jack concrete block armors can be used as an effective way to control such a phe
Externí odkaz:
https://doaj.org/article/5d21cb8d994544d383f217dc02f744cb
Publikováno v:
Shock and Vibration, Vol 2021 (2021)
The jet flipped from flip buckets hits the dam’s downstream side as a free jet with an immense amount of energy, leading to bed erosion. Erosion of river bed materials downstream of dams could affect the performance of dams or power plants by alter
Externí odkaz:
https://doaj.org/article/f51e616a7c5e4febba35042b5477332b
Publikováno v:
مجله آب و خاک, Vol 30, Iss 2, Pp 392-404 (2017)
Introduction: Flow patterns within the river bend is three dimensional. Occurrence of secondary flow due to centrifugal force and formation of helicoidally vortex in river bend usually causes the outer bank of river erodes whilst the sediment are dep
Externí odkaz:
https://doaj.org/article/13db663ad4614e90b9949b410a8e1a63
Publikováno v:
علوم و مهندسی آبیاری, Vol 42, Iss 2, Pp 215-230 (2019)
To control scour, it is first necessary to examine the scouring mechanism and the flow patterns around the abutment. By constructing of the abutment, the approaching flow pattern around it is disturbed. In addition, this brings about an increase in t
Externí odkaz:
https://doaj.org/article/794e3e3cff044fa69339a55473faa119
Publikováno v:
علوم و مهندسی آبیاری, Vol 40, Iss 4, Pp 109-124 (2018)
The most common way to dissipate the water kinetic energy at the downstream of weirs , gates at chutes is to use the hydraulic jump. Hydraulic jump is a phenomenon that alters the flow regime of the state of supercritical to the subcritical with diss
Externí odkaz:
https://doaj.org/article/35fea7c44aeb4351b9119a8eff8cf7a7
Publikováno v:
Journal of Hydraulic Structures, Vol 2, Iss 1, Pp 1-11 (2016)
River confluence is a common feature of most irrigation and drainage channels and river systems, where tributary conflicts the main channel. In these section, rapid changes in velocity and discharge, sediment distribution and flow turbulent result in
Externí odkaz:
https://doaj.org/article/d2082443687945d29352d0cf36c48157
Publikováno v:
Iranian Journal of Science and Technology, Transactions of Civil Engineering. 46:2667-2676
Generating a mathematical relationship between rainfall and runoff plays an important role in the decision-making process and control of surface flows. This structure has levels of uncertainty based on the hydrological conditions, land cover, time, d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d8870bc694eaf4621963db67eebec03
https://doi.org/10.1007/s40996-021-00629-4
https://doi.org/10.1007/s40996-021-00629-4
Publikováno v:
Ain Shams Engineering Journal, Vol 12, Iss 1, Pp 381-391 (2021)
Flip buckets are among one of the most common types of energy dissipaters, especially for dams. The scouring phenomenon occurs when falling jets hit the river bed, and A-Jack concrete block armors can be used as an effective way to control such a phe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eadd91f48665f2604dc6f297b3871750
http://www.sciencedirect.com/science/article/pii/S2090447920301027
http://www.sciencedirect.com/science/article/pii/S2090447920301027
Autor:
Mehdi Azhdary Moghaddam, Mohammad Rashki Ghaleh Nou, Mahmood Shafai Bajestan, Hazi Mohammad Azamathulla
Publikováno v:
Ain Shams Engineering Journal. 11:1047-1059
Local scouring is one of the key issues at the downstream of ski-jump spillways which may result in failure of the hydraulic structures. Therefore, adopting some measures in order to control and reduce this phenomenon is very crucial. In the present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04896433ab10cdf386e007ee677e540c
https://doi.org/10.1016/j.asej.2020.01.009
https://doi.org/10.1016/j.asej.2020.01.009
Publikováno v:
علوم و مهندسی آبیاری, Vol 33, Iss 2, Pp 51-61 (2010)
Deposition of sediment inside the conduit structures; eg inverted siphon; reduces the flow cross section area and increase the flow roughness which causes reduction of flow discharge passing through the conduit. In order the structure to function pro
Externí odkaz:
https://doaj.org/article/6f1782421cb5447b8e0b9704b9510f18