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2020 | OriginalPaper | Buchkapitel

3. Facility for Turbulence Generation

verfasst von : Luis Blay Esteban

Erschienen in: Dynamics of Non-Spherical Particles in Turbulence

Verlag: Springer International Publishing

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Abstract

This chapter presents an experimental facility designed to generate and control turbulence in a laboratory. This consists of a modified version of the random jet array (RJA) proposed in Bellani and Variano (Exp Fluids 55:1646–1666, 2013, [1]) that allows us to generate homogeneous and anisotropic turbulence. Moreover, this zero-mean flow facility can be used to investigate the temporal decay of turbulence without invoking Taylor’s hypothesis. Thus, the aim of this chapter is twofold: first present the facility designed and second investigate the evolution of anisotropic turbulence over time and evaluate the spatial confinement effect. Once these two questions are answered we will have the tools to examine how different turbulent flows modify the descent style of large inertial particles; and this, at the same time will give us some insight into the particle behaviour inside Aquavitrum’s tank. This chapter is structured as follows; in Sect. 3.1 we introduce zero-mean flow facilities used to generate turbulence and we detail experimental and numerical results on the decay of turbulence with and without confinement effects, in Sect. 3.2 we present the experimental setup and the measurement technique, Sects. 3.3 and 3.4 show the results for stationary and decay turbulence, respectively, and we conclude in Sect. 3.5.

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Titel: Facility for Turbulence Generation
verfasst von: Luis Blay Esteban
Verlag: Springer International Publishing
Buch: Dynamics of Non-Spherical Particles in Turbulence
Print ISBN: 978-3-030-28135-9

Electronic ISBN: 978-3-030-28136-6

Copyright-Jahr: 2020
DOI: https://doi.org/10.1007/978-3-030-28136-6_3

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