نتایج جستجو برای: vortex breaker

تعداد نتایج: 28702  

سید محمد علی زمردیان, , محمدرضا باقری سبزواری, ,

The vertical pipe intake is an economical structure relative to the other alternatives. VPI usually installed near the water surface and prevents from the coarse sediment entrance to the system. The strong vortex in VPI entrance is a major problem which may reduce the system efficiency. Recognizing the vortex affected parameters, helping engineers to design anti vortex structures. In this study...

2011
Jun‐Hong Liang James C. McWilliams Peter P. Sullivan Burkard Baschek

[1] We report on the development of a bubble concentration model and a dissolved gas concentration model for the oceanic boundary layer. The bubble model solves a set of concentration equations for multiple gases in bubbles of different sizes, and the dissolved gas concentration model simulates the evolution of dissolved gases and dissolved inorganic carbon. The models include the effects of ad...

S. M. Borghei and D. Rajabi Siahboomi,

This paper is about experimental results for partial reduction of vortex at vertical pipe intakes. One of the easiest and practical ways of reducing vortex effect is to use anti-vortex plates or baffles. These plates can be used to avoid the vortex completely or partially. This paper will concentrate on the latter case. Rectangular plates with different dimensions have been placed at different ...

ژورنال: مهندسی دریا 2017

The horseshoe vortex generated around the sail-body junction of a submarine has an important influence on the uniformity of the submarine wake at the propeller and hydrodynamic noise. The influence of the horseshoe vorex on the submarine performance is not negligible. A suitable way to reduce the effects of this separated flow is to use vortex generators. The main goal of the present study is t...

Journal: :Iet Science Measurement & Technology 2023

The restrike of vacuum circuit breaker during the breaking process causes overvoltage and intensifies insulation deterioration high-voltage equipment. To solve this problem, aging test method characteristics are researched. A withstand voltage platform 40.5-kV was established to obtain effects contact spacing loop inrush currents on number restrike, wavefront steepness breakdown voltage, durati...

2010
MICHAEL KRIVELEVICH

A Maker-Breaker game is a triple (H, a, b), where H = (V,E) is a hypergraph with vertex set V , called the board of the game, and edge set E, a family of subsets of V called winning sets. The parameters a and b are positive integers, related to the so-called game bias. The game is played between two players, called Maker and Breaker, who change turns occupying previously unclaimed elements of V...

Journal: :مهندسی برق و الکترونیک ایران 0
n. nikpour k. niayesh

nowadays, high-voltage circuit breakers have reached such high short-circuit capabilities that testing them under the full rated voltage is generally not possible with direct tests, and they are conducted by using the synthetic test methods. although the phenomena associated with making tests is of particular importance especially in case of load break switches, but making tests are rather disr...

Journal: :International Journal of Innovative Science and Research Technology 2020

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 1998

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