Estimation of 3D ship airwakes using dual-plane PIV

Zhu, Nicholas; Zhang, Zheng; Gnanamanickam, Ebenezer P.; Leishman, J. Gordon

doi:10.1007/s00348-023-03727-3

Exp Fluids

2023

DOI: 10.1007/s00348-023-03727-3

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Estimation of 3D ship airwakes using dual-plane PIV

Nicholas Zhu,

Zheng Zhang,

Ebenezer P. Gnanamanickam

et al.

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2024

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A multi-directional redundant 3D-LPT system for ship–flight–deck wind interactions

Hysa,

Tuinstra,

Sciacchitano

et al. 2024

Exp Fluids

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In the past years, volumetric velocimetry measurements with helium-filled soap bubbles as tracer particles have been introduced in wind tunnel experiments and performed at large-scale, enabling the study of complex body aerodynamics. A limiting factor is identified in the field of wind engineering, where the flow around ships is frequently investigated. Considering multiple wind directions, the optical access for illumination and 3D imaging rapidly erodes the measurement regions due to shadows and incomplete triangulation. This work formalizes the concepts of volumetric losses and camera redundancy, and examines the performance of multi-directional illumination and imaging for monolithic and partitioned modes. The work is corroborated by experiments around a representative ship model. The study shows that a redundant system of cameras yields the largest measurement volume when partitioned into subsystems. The 3D measurements employing two illumination directions and seven cameras, yield the time-averaged velocity field around the ship. Regions of flow separation and recirculation are revealed, as well as sets of counter-rotating vortices in several stations from the ship bow to the flight–deck. The unsteady regime at the flight–deck is examined by proper orthogonal decomposition, indicating that the technique is suited for the analysis of large-scale unsteady flow features.

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A multi-directional redundant 3D-LPT system for ship–flight–deck wind interactions

Hysa,

Tuinstra,

Sciacchitano

et al. 2024

Exp Fluids

View full text Add to dashboard Cite

show abstract

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Estimation of 3D ship airwakes using dual-plane PIV

Cited by 1 publication

References 60 publications

A multi-directional redundant 3D-LPT system for ship–flight–deck wind interactions

A multi-directional redundant 3D-LPT system for ship–flight–deck wind interactions

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