Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Babak Lashkar-Ara"'
Autor:
Babak Lashkar-Ara
Publikováno v:
علوم و مهندسی آبیاری, Vol 46, Iss 4, Pp 1-12 (2024)
In open channel flow, determining the boundary shear stress and its distribution over the wetted perimeter is a significant problem. The shear stress distribution (SSD) is primarily affected by secondary flows, sediment transport rate, erosion or sed
Externí odkaz:
https://doaj.org/article/7de482a6c3564982bfc199d5988a5939
Autor:
Hossein Aryaei, Babak Lashkar-Ara
Publikováno v:
فناوریهای پیشرفته در بهرهوری آب, Vol 3, Iss 3, Pp 20-36 (2023)
Sediment deposition issues for reservoirs are important because the severe deposition could excessively decrease the reservoir lifecycle. Extreme storm events usually can carry a massive amount of sediment into reservoirs, and deposition will happen
Externí odkaz:
https://doaj.org/article/96b97320d34c47c0972e8344fdb0abe1
Autor:
Babak Lashkar-Ara, Leila Najafi
Publikováno v:
علوم و مهندسی آبیاری, Vol 44, Iss 2, Pp 25-38 (2021)
Flow aeration in chute spillway is one of the most effective and economic ways to prevent cavitation damage. Surface damage is significantly reduced when very small values of air are scattered in a water prism. A structure known as an aerator may be
Externí odkaz:
https://doaj.org/article/60be99f376da4cd09988f3a15a018567
Publikováno v:
علوم و مهندسی آبیاری, Vol 43, Iss 4, Pp 79-89 (2020)
High flow discharges coming from the hydraulic structures usually carry a high-velocity jet of flow, which could have different short- and long-term impacts on the river mechanics and the habitat conditions. Scouring is one of the major effects of th
Externí odkaz:
https://doaj.org/article/6eaf6c45b2d3490882610f4492139ea5
Publikováno v:
Ain Shams Engineering Journal, Vol 10, Iss 4, Pp 681-693 (2019)
The renewable energy protocol in the world pushed most countries to extensive use of renewable energy sources, in exchange for a reduction of energy from conventional sources. In this article, the possibilities of exchange the water hammer energy to
Externí odkaz:
https://doaj.org/article/deeb0829f28e4b75a2de8b9d0e70cdb8
Publikováno v:
علوم و مهندسی آبیاری, Vol 41, Iss 3, Pp 171-184 (2018)
Horizontal intakes are one of the most important parts of hydraulic sets such as rivers for irrigation or reservoirs for power generation and industrial purposes. Air entrainment, by means of a free air-core vortex occurring at intake pipes, is an im
Externí odkaz:
https://doaj.org/article/4f36342893094e4db83e22a958e7439c
Publikováno v:
علوم و مهندسی آبیاری, Vol 41, Iss 2, Pp 211-224 (2018)
In reservoir of dams, especially near the dam body, the cohesive fine sediments are deposited mainly. The mechanical behavior of these sediments is largely controlled by the interparticle attraction caused by electrostatic and physiochemical forces.
Externí odkaz:
https://doaj.org/article/7738363762e54d0db6ed60d0f7dc61b6
Publikováno v:
علوم و مهندسی آبیاری, Vol 40, Iss 4, Pp 125-139 (2018)
Distribution pattern of the river bed particles grading creates important issues in investigation of the hydraulic, geomorphological and ecological behavior of the river.. For example, surface grain-size variability is crucial for illustrating sedime
Externí odkaz:
https://doaj.org/article/66460ba0d13549c1922052238d199180
Autor:
Babak Lashkar-Ara, Yaser Sheikhi
Publikováno v:
علوم و مهندسی آبیاری, Vol 40, Iss 2, Pp 209-221 (2017)
Flood is a stochastic phenomenon and successful and construction of economic dam in flood discharge system is very important. In recent years, non-linear overflows, as a solution, helped designers and engineers of water sciences. In this study, new n
Externí odkaz:
https://doaj.org/article/24fce4e04e8d411c9ad8f1f3623e4c6b
Publikováno v:
مهندسی منابع آب, Vol 9, Iss 30, Pp 13-24 (2017)
Flow pattern in a fish way has an effective role in providing a proper and safe passage for absorbing of fishes. High turbulence flow can be considered as a reductive factor of fish velocity and by causing damages to them leads in delay in raising th
Externí odkaz:
https://doaj.org/article/ad0a649a119e4a7fb0ad5f96913df13a