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Title: Numerical Modelling Of Vortices Development In Tapered Duct
Author: Grzegorz L. Pankanin, Jerzy Berlinski, Ryszard Chmielewski
Source: Flomeko 2003
Year Published: 2003
Abstract: The work refers to the vortex flow meter optimisation. Searching of the optimal geometry of the meter became the fundamental task for designers. For many years their attention has been focused mainly on the bluff body as well as on the sensor designing. Numerous experiments made by authors of the paper confirm that not only the bluff body shape but also geometry of the duct impacts the vortices development. Duct walls stabilize the vortex shedding and its development process. Hence the conception of flow duct tapering in the vortices development zone. On the basis of the numerical simulation it is concluded that due to the pipe cross-section contraction (causing the flow velocity increase) the vortex rotation energy enhancement as well as vortex life-time increase has been attained.

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