نتایج جستجو برای: over velocity

تعداد نتایج: 1260575  

2009
D. Vijayakumar R. K. Nema

Particle Swarm Optimization, a recently more popular optimizer utilizes the swarm behavior in searching for an optimum. The classical/standard PSO (SPSO) algorithm is normally used for unconstrained optimization tasks. The Directional Over-Current Relay (DOCR) Coordination problem is a highly constrained optimization problem, therefore the SPSO in its original form cannot be used to solve it. T...

2016
Sabine Chamoun Giovanni De Cesare Anton J. Schleiss

Turbidity currents are the main source of suspended sediment transport in reservoirs and thus one of the main causes of sedimentation. One of the techniques used to avoid reservoir sedimentation is through venting of turbidity currents. In the framework of a research work on venting, velocity measurements of turbidity currents flowing on a flat bed are carried out using Ultrasonic Velocity Prof...

ژورنال: علوم آب و خاک 2009
ایزدی نیا, الهام, حیدرپور, منوچهر, کبیری سامانی, عبدالرضا,

In this study, the flow characteristics have been investigated by measuring separation zone, surface and velocity profiles over the circular crested side weirs. An equation was proposed for the length of the separation zone using dimensional, statistical and regression analysis. The dimensional analysis showed that the length of separation zone depends on the upstream to the downstream water de...

ایزدی نیا, الهام, حیدرپور, منوچهر, کبیری سامانی, عبدالرضا,

In this study, the flow characteristics have been investigated by measuring separation zone, surface and velocity profiles over the circular crested side weirs. An equation was proposed for the length of the separation zone using dimensional, statistical and regression analysis. The dimensional analysis showed that the length of separation zone depends on the upstream to the downstream water de...

Journal: :journal of water sciences research 0
h.r vosoughifar assistant professor of islamic azad university, south tehran branch, faculty of engineering and technology. a.r daneshkhah m.s. graduate of civil engineering, majoring in hydraulic structures, faculty of engineering and technology, azad university, south tehran branch

in this research, the numerical method of computational fluid dynamics and dimensionless parameter of froude number have been applied to determine the flow regime over ogee spillways.froude number is a dimensionless dynamic parameter calculated using the square root of the ratio of inertia force and gravitational force. considering that the study of the regimes of flow over hydraulic structures...

The importance of the slip flow over the no-slip condition is widely accepted in microscopic scaled domains with the direct impact on microfluidic and nanofluidic systems. The popular Navier Stoke’s (N-S) flow model is largely utilized with the slip flow phenomenon. In the present study, the finite integral transform scheme along with the shift of variables is implemented to solve the equation ...

Journal: :Transactions of the Japan Society of Mechanical Engineers 1956

Journal: :European Journal of Mechanics - A/Solids 2019

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