TY - JOUR
T1 - The TU Wien Turbulent Water Channel
T2 - Flow control loop and three-dimensional reconstruction of anisotropic particle dynamics
AU - Giurgiu, Vlad
AU - Caridi, Giuseppe Carlo Alp
AU - Alipour, Mobin
AU - De Paoli, Marco
AU - Soldati, Alfredo
N1 - Funding Information:
The authors acknowledge the TU Wien University Library for financial support through its Open Access Funding Program. V.G. acknowledges the financial support provided by FSE S3 HEaD (Grant No. 1619942002). A.S. acknowledges the generous endowment funding from TU Wien. This research was funded in part by the Austrian Science Fund (FWF) (Grant No. P-35505). V.G. and A.S. also gratefully acknowledge funding from the PRIN project “Advanced computations and experiments in turbulent multiphase flow” (Project No. 2017RSH3JY).
Publisher Copyright:
© 2023 Author(s).
PY - 2023/9
Y1 - 2023/9
N2 - A horizontal water channel facility was built to study particle dynamics in a turbulent flow. The channel is sufficiently long to produce fully developed turbulence at the test section, and the width-to-height ratio is sufficiently large to avoid the sidewall effect for a large proportion of the cross-section. The system was designed to study the dynamics of complex-shaped particles in wall-bounded turbulence, the characteristics of which can be finely controlled. A maximum bulk velocity of up to 0.8 m s−1 can be achieved, corresponding to a bulk Reynolds number of up to 7 × 104 (shear Reynolds number ≈ 1580 ), and flow parameters can be controlled within ±0.1%. The transparent channel design and aluminum structures allow easy optical access, which enables multiple laser and camera arrangements. With the current optical setup, a measurement volume of up to 54 × 14 × 54 mm3 can be imaged and reconstructed with six cameras from the top, bottom, and sides of the channel. Finally, the in-house developed reconstruction and tracking procedure allows us to measure the full motion of complex objects (i.e., shape reconstruction, translational, and rotational motions), and in this instance, it is applied to the case of microscopic, non-isotropic polyamide fibers.
AB - A horizontal water channel facility was built to study particle dynamics in a turbulent flow. The channel is sufficiently long to produce fully developed turbulence at the test section, and the width-to-height ratio is sufficiently large to avoid the sidewall effect for a large proportion of the cross-section. The system was designed to study the dynamics of complex-shaped particles in wall-bounded turbulence, the characteristics of which can be finely controlled. A maximum bulk velocity of up to 0.8 m s−1 can be achieved, corresponding to a bulk Reynolds number of up to 7 × 104 (shear Reynolds number ≈ 1580 ), and flow parameters can be controlled within ±0.1%. The transparent channel design and aluminum structures allow easy optical access, which enables multiple laser and camera arrangements. With the current optical setup, a measurement volume of up to 54 × 14 × 54 mm3 can be imaged and reconstructed with six cameras from the top, bottom, and sides of the channel. Finally, the in-house developed reconstruction and tracking procedure allows us to measure the full motion of complex objects (i.e., shape reconstruction, translational, and rotational motions), and in this instance, it is applied to the case of microscopic, non-isotropic polyamide fibers.
U2 - 10.1063/5.0157490
DO - 10.1063/5.0157490
M3 - Article
C2 - 37676785
AN - SCOPUS:85170173977
SN - 0034-6748
VL - 94
JO - Review of scientific instruments
JF - Review of scientific instruments
IS - 9
M1 - 095101
ER -