1. Introduction The Acoustic Scintillation Flow Meter (ASFM) measures flow velocity in directions perpendicular to pairs of parallel acoustic beams. In its simplest hydroelectric power plant applications, the ASFM's acoustic beams originate from horizontally-aligned pairs of adjacent transducers mounted on intake walls or on the vertical members of frames designed to fit into intake gate slots....

Vertical dropshafts with tangential intake structures are often used in urban drainage systems to route surface flow into underground systems. Vortex driven by a inlet is the typical pattern vertical dropshaft. However, analytical solutions of key hydraulic transition from chute vortex have not been investigated, and theoretical guidelines dropshaft available. In present study, series proposed ...

Abstract The most important design index of water intakes is critical submergence depth the intake. at which air core formed by vortex about to enter emergence a and entry into intake increase head loss decrease discharge coefficient. reservoir geometric asymmetry, presence unevenness in bottom angle approach flow are among factors that influence formation depth. In this research, physical mode...

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 ...

 In accordance with the Iranian government intention toward two step forward elimination of energy subsidies policy in coming years, we focus in this study on the extent by which the corresponding raising costs will be distributed across the livestock sector and how they affected food security. For this purpose, scenario of increasing energy prices and improving productivity at vertical and hor...

SLJMMARY A rectangular intake having variable geometry compression surfaces and designed for supersonic operation has been tested at a Mach number of 0.9 and a Reynolds number based on intake entry height of approximately 106. Tests have been made on the intake in isolation and on the side of a fuselage. Maximum mass flow is less than estimates based on geometric throat size. The deficit corres...