Effect of the motion pattern on the turbulence generated by an active grid

Name: Effect of the motion pattern on the turbulence generated by an active grid
Author: Herbert, M., Skeledzic, T., Lienhart, H., Ertunç, Özgür

İsim	Effect of the motion pattern on the turbulence generated by an active grid
Yazar	Herbert, M., Skeledzic, T., Lienhart, H., Ertunç, Özgür
Basım Tarihi:	2021
Basım Yeri	- Springer
Konu	Active grid, Experimental study, Turbulence
Tür	Kitap
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2-s2.0-85111364204
Kayıt Numarası	99b2d5da-2909-43e0-94bb-ca0e8dc7fc38
Lokasyon	Mechanical Engineering
Tarih	2021
Örnek Metin	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.
DOI	10.1007/978-3-030-79561-0_4
Cilt	151

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Effect of the motion pattern on the turbulence generated by an active grid

Yazar Herbert, M., Skeledzic, T., Lienhart, H., Ertunç, Özgür

Basım Tarihi 2021

Basım Yeri - Springer

Konu Active grid, Experimental study, Turbulence

Tür Kitap

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2-s2.0-85111364204

Kayıt Numarası 99b2d5da-2909-43e0-94bb-ca0e8dc7fc38

Lokasyon Mechanical Engineering

Tarih 2021

Örnek Metin 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.

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

Cilt 151