This paper presents a comprehensive experimental aeroacoustic investigation of propeller under turbulence ingestion. Two turbulence-generating passive grids were utilized to quantify the effect intensity on characteristics propeller. A two-component hot-wire anemometry was employed study flow field. The field results demonstrate substantial increase in fluctuating velocity components both axial...

Objective. This in vitro study compared the flow pattern and shear stress of an irrigant induced by ultrasonic and polymer rotary finishing file activation in an acrylic root canal model. Flow visualization analysis was performed using an acrylic canal filled with a mixture of distilled water and rheoscopic fluid. The ultrasonic and polymer rotary finishing file were separately tested in the ca...

In this paper we present the impact of hot wire geometry and fluid characteristics on the efficiency of a hot wire to be used as a wall shear stress sensor. Finite differences and finite elements modelling based simulators were used in order to evaluate the thermal performances of hot wire wall shear stress sensor. Several structures were explored including simple conductor or suspended above a...

background: in intracavitary brachytherapy for gynecological cancers, various techniques are used to locate the anterior rectal wall nearest to the sources but there is no consensus on the best method to do so. this study aimed to compare a technique used routinely in some centers that employs a wire marker to locate the position of the maximum rectal dose point, versus the method recommended b...

Noise pollution caused by inflow turbulence is a major problem in many applications, e.g., propellers and fans. The Amiet leading-edge noise prediction model widely applied the design of silent fans, strongly relying on accuracy spectrum. von Kármán energy spectrum accurately models energy-containing range inertial subrange However, this does not incorporate dissipation turbulent leads to incor...

Urban wind energy has intrigued some investments and applications over the last decade. However, most have been unsuccessful, in many cases leaving behind non-rotating turbines built environment. Research on urban also lacked providing a reliable description of local flow features small are placed in, positioning strategy is mostly based empiricism. This study uses data from tunnel test pattern...

This study deals with the wall resolved Unsteady Reynolds-Averaged Navier–Stokes (URANS) simulation of boundary layer flow separation over a circular hump model and its active control. An array Synthetic Jet Actuators (SJAs) is implemented in to introduce train vortex rings into control separation. The OpenFOAM solver used numerically simulate analyze fluid using k– ω shear stress transport mod...

Background: In intracavitary brachytherapy for gynecological cancers, various techniques are used to locate the anterior rectal wall nearest to the sources but there is no consensus on the best method to do so. This study aimed to compare a technique used routinely in some centers that employs a wire marker to locate the position of the maximum rectal dose point, versus the method recommended b...

The present work is dedicated to the investigation of effect an isolated roughness element on a swept wing boundary layer. In particular, flow modifications incurred by single cylindrical applied model are measured, toward describing nature perturbations introduced in field, their development near and far wake region, as well eventual breakdown. measurements performed using infrared thermograph...