As an efficient energy consumption hydraulic structure applied in deep-buried tunnel drainage system, the rate and inflow capacity of baffle-drop shafts were been influenced seriously by shaft structural parameters. Based on a scale model test Realizable k–ε model, flow regimes, maximum discharge, outflow velocity, drop with different baffle angles spacings experimentally numerically investigat...

A baffled arc array (BAA) comprises a circular array of sensors surrounding a cylindrical metal baffle, and beamforming is carried out by processing sensors on an arc centred on beamsteer. It is widely used in sonar for passive underwater surveillance. An important factor that limits the performance of the array at high frequencies is the appearance of grating lobes in the beamformer response. ...

Abstract Fast ion wall loads can result in excessively high heat fluxes to the plasma-facing components (PFCs). To allow for development of mitigation strategies, and thereby protect PFCs, fast losses have be predicted by faithful models. ensure that models are an accurate representation real world, they need verified. The neutral-beam experiments performed Wendelstein 7-X (W7-X) investigate ve...

In order to enhance the fluid mixing in stirred tank and reduce power consumption under condition of full baffle, a sinusoidal sawtooth baffle was established present study. Based on Eulerian–Eulerian method, numerical simulation mixed flow conducted, reliability method verified by means PIV experiments. The different structural characteristics standard sine were compared, explore effect modifi...

The purpose of this study was to evaluate the efficiency a large-scale Horizontal Tubular Flocculator (HTF) as an easy-to-implement technology for potable water provision compared traditional baffle flocculator. HTF built with 4-inch diameter PVC pipe and coupled sedimentation filtration process. Experimental tests were performed using lengths 68.4 m 97.6 HTF. These combined raw flow rates 0.25...

Recent progress in micro-optics fabrication and optical modeling software opens the opportunity to investigate how microlenslet-array-based compact relay systems can be designed and assessed. We present various optical configurations that include an appropriate baffle computation to eliminate ghost images, followed by an analysis of image quality. The investigation shows the existing trade-off ...

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Power series expansions in ka are derived for the pressure at the edge of a radiator, the reaction force on the radiator, and the total radiated power arising from a harmonically excited, resilient, flat, circular radiator of radius a in an infinite baffle. The velocity profiles on the radiator are either Stenzel functions (1-(sigma/a)2)n, with sigma the radial coordinate on the radiator, or li...