Title

Experimental investigation with digital particle image velocimetry for turbulent flow of slender particles in a stirred tank

Conference Dates

May 22-27, 2016

Abstract

Stirred vessels are one of the oldest and most commonly encountered industrial devices. It is frequently used in chemical process industry where gas dispersion in liquids, liquid-liquid blending and solid suspensions in liquids are involved. The design of stirred tanks requires the knowledge of flow field and understanding of the effects of various system parameters on mixing efficiency.

However the experimental data acquisitions for design purposes with solid-liquid two-phase flows in a stirred tank are difficult. Solid-liquid two-phase flow is very common and of considerable interest for multiphase flow in stirred tanks. Intrusive probe techniques introduce an undesirable physical disturbance to the flow and can result in either inaccuracies in the measurements or even permanent impairment of the probes. A number of non-intrusive methods for the measurement of particle velocities have been developed in the last decade. Among these new methods, Digital Particle Image Velocimetry (DPIV) is a very appropriate choice. DPIV is a technique that combines the accuracy of Laser Dynamic Velocimetry (LDV) with the qualitative information from flow visualization.

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