Effect of the Motion Pattern on the Turbulence Generated by an Active Grid

Herbert M, Skeledzic T, Lienhart H, Ertunc Ö (2021)

Publication Type: Book chapter / Article in edited volumes

Publication year: 2021

Journal

COMPUTATIONAL SCIENCE AND HIGH PERFORMANCE COMPUTING III

Publisher: Springer Science and Business Media Deutschland GmbH

Edited Volumes: Notes on Numerical Fluid Mechanics and Multidisciplinary Design

Series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design

Book Volume: 151

Pages Range: 37-46

DOI: 10.1007/978-3-030-79561-0_4

Abstract

In the field of turbulence research, many experiments are performed using turbulence generated under reproducible conditions. In the past mostly static grids having a fixed blockage were adopted, but in order to generate turbulence with high intensity and high turbulence Reynolds numbers, so called active grids can be used. Therefore, an experimental study has been carried out to investigate the effect of the motion pattern on the turbulence generated by an active grid with individually controllable paddles in the wind tunnel. Measurements were performed using the hot-wire technique. In comparison to former experiments, modifications of the active grid had been made concerning the arrangement of the paddles. The results show that the homogeneity of the turbulence could be improved using the modified grid. Turbulence Reynolds numbers could reach values up to 540. In order to produce even higher integral time scales or higher turbulence Reynolds numbers, synchronous movement of adjacent paddles was tested but did not show the intended improvements. In this paper, the results of the experimental study are presented in more detail.

Authors with CRIS profile

Meike Lieret Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Tanja Skeledzic Lehrstuhl für Chemische Reaktionstechnik (CRT) Hermann Lienhart Lehrstuhl für Strömungsmechanik (LSTM)

Involved external institutions

Özyeğin University / Özyeğin Üniversitesi TR Turkey (TR)

How to cite

APA:

Herbert, M., Skeledzic, T., Lienhart, H., & Ertunc, Ö. (2021). Effect of the Motion Pattern on the Turbulence Generated by an Active Grid. In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. (pp. 37-46). Springer Science and Business Media Deutschland GmbH.

MLA:

Herbert, Meike, et al. "Effect of the Motion Pattern on the Turbulence Generated by an Active Grid." Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Science and Business Media Deutschland GmbH, 2021. 37-46.

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