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VELOCITY COEFFICIENT EVALUATION FOR WATER-JET APPLICATIONS

Massimiliano Annoni, Marco Faifer, Loredana Cristaldi, Michele Norgia

Abstract

The topic of water jet orifices efficiency and effectiveness evaluation has been considered in this paper. The performed analysis is based on the evaluation of the discharge, velocity and contraction coefficients for different water orifices. In order to overcome the difficulty to measure the water velocity at the orifice exit, which can reach 900 m/s in case of pure water jet applications (without abrasive additives), a suitable laser Doppler measurement system has been applied. An analysis of orifice performances is presented in the present paper, also considering the case of broken orifices, very important for industrial applications.

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IMEKO-TC4-2008-174.pdf
DOI
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IMEKO TC
TC4 - Measurement of Electrical Quantities

Event details

Event
Exploring New Frontiers of Instrumentation and Methods for Electrical and Electronic Measurements
Technical Committee
TC4
Place
Florence, ITALY
Time
22 September 2008 - 24 September 2008
Website
http://www.imeko2008.org/

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