All Outputs (6)

Experimental study of flow around polygonal cylinders (2016)
Journal Article
Xu, S., Zhang, W., Gan, L., Li, M., & Zhou, Y. (2017). Experimental study of flow around polygonal cylinders. Journal of Fluid Mechanics, 812, 251-278. https://doi.org/10.1017/jfm.2016.801

The wake of polygonal cylinders with side number N=2∼∞N=2∼∞ is systematically studied based on fluid force, hot-wire, particle image velocimetry and flow visualisation measurements. Each cylinder is examined for two orientations, with a flat surface... Read More about Experimental study of flow around polygonal cylinders.

Flow interaction between a streamwise oscillating cylinder and a downstream stationary cylinder (2016)
Journal Article
Xu, S., Gan, L., & Zhou, Y. (2016). Flow interaction between a streamwise oscillating cylinder and a downstream stationary cylinder. Experiments in Fluids, 57(11), Article 173. https://doi.org/10.1007/s00348-016-2265-y

In this paper, we present some experimental results about the physical effects of a cylinder’s streamwise oscillation motion on a downstream one in a tandem arrangement. The upstream cylinder undergoes a controlled simple harmonic oscillation at ampl... Read More about Flow interaction between a streamwise oscillating cylinder and a downstream stationary cylinder.

Evolution of turbulence and in-plane vortices in the near field flow behind multi-scale planar grids (2016)
Journal Article
Gan, L., & Krogstad, P. (2016). Evolution of turbulence and in-plane vortices in the near field flow behind multi-scale planar grids. Physics of Fluids, 28(8), Article 085101. https://doi.org/10.1063/1.4960025

In this experimental work, we carry out detailed two-dimensional particle image velocimetry investigations for the near field wakes behind a conventional and two multi-scale planar grids, using stitched camera fields of view. Statistical independent... Read More about Evolution of turbulence and in-plane vortices in the near field flow behind multi-scale planar grids.

Transient growth associated with secondary vortices in ground/vortex interactions (2016)
Journal Article
Stuart, T., Mao, X., & Gan, L. (2016). Transient growth associated with secondary vortices in ground/vortex interactions. AIAA Journal, 54(6), 1901-1906. https://doi.org/10.2514/1.j054484

The interaction of an isolated trailing vortex and the ground is investigated. An unsteady unperturbed flow is first calculated through a two-dimensional direct numerical simulation and then used as base flow for linear transient growth studies. The... Read More about Transient growth associated with secondary vortices in ground/vortex interactions.

An experimental investigation of forced steady rotating turbulence (2016)
Journal Article
Gan, L., Baqui, B., & Maffioli, A. (2016). An experimental investigation of forced steady rotating turbulence. European Journal of Mechanics - B/Fluids, 58, 59-69. https://doi.org/10.1016/j.euromechflu.2016.03.005

This paper presents some of the principal findings of an experimental investigation of forced statistically steady turbulence in a rapidly rotating background. The experiment is conducted in a large cylindrical mixing tank and bulk rotation is produc... Read More about An experimental investigation of forced steady rotating turbulence.

Detection of passive scalar interface directly from PIV particle images in inhomogeneous turbulent flows (2016)
Journal Article
Gan, L. (2016). Detection of passive scalar interface directly from PIV particle images in inhomogeneous turbulent flows. Flow, Turbulence and Combustion, 97(1), 141-170. https://doi.org/10.1007/s10494-015-9691-4

This article proposes a technique to estimate the cross-sectional scalar interface (outer boundary) in an inhomogeneous turbulent flow from a conditioned particle image velocimetry (PIV) experiment, which is suitable for medium to high Reynolds numbe... Read More about Detection of passive scalar interface directly from PIV particle images in inhomogeneous turbulent flows.