Outputs (6)

The formation and evolution of turbulent swirling vortex rings generated by axial swirlers (2019)
Journal Article
He, C., Gan, L., & Liu, Y. (2020). The formation and evolution of turbulent swirling vortex rings generated by axial swirlers. Flow, Turbulence and Combustion, 104(4), 795-816. https://doi.org/10.1007/s10494-019-00076-2

The present work investigates the formation process and early stage evolution of turbulent swirling vortex rings, by using planar Particle Image Velocimetry (PIV) and Large Eddy Simulation (LES). Vortex rings are produced in a piston-nozzle arrangeme... Read More about The formation and evolution of turbulent swirling vortex rings generated by axial swirlers.

Scaling of the time-mean characteristics in the polygonal cylinder near-wake (2019)
Journal Article
Wang, Q., Xu, S., Gan, L., Zhang, W., & Zhou, Y. (2019). Scaling of the time-mean characteristics in the polygonal cylinder near-wake. Experiments in Fluids, 60, Article 181. https://doi.org/10.1007/s00348-019-2835-x

The near wake of the polygonal cylinder with the side number N = 3 ~ ∞ is systematically studied based on particle image velocimetry (PIV) and load-cell measurements. Each cylinder is examined for two orientations, with either one leading side or lea... Read More about Scaling of the time-mean characteristics in the polygonal cylinder near-wake.

Vortex evolution in the near wake behind polygonal cylinders (2019)
Journal Article
Wang, Q., Gan, L., Xu, S., & Zhou, Y. (2020). Vortex evolution in the near wake behind polygonal cylinders. Experimental Thermal and Fluid Science, 110, Article 109940. https://doi.org/10.1016/j.expthermflusci.2019.109940

The near wake of the polygonal cylinder with the side number N = 3~∞ is systematically studied using particle image velocimetry (PIV) at Re = 1.6 × 104. The proper orthogonal decomposition (POD) analysis is carried out to extract the large-scale cohe... Read More about Vortex evolution in the near wake behind polygonal cylinders.

Non-hydrostatic modelling of shallow water flow around a circular array of emergent cylinders (2019)
Journal Article
Wang, J., Zhang, J., Liang, D., & Gan, L. (2020). Non-hydrostatic modelling of shallow water flow around a circular array of emergent cylinders. Journal of Hydroinformatics, 22(1), 20-32. https://doi.org/10.2166/hydro.2019.018

This paper focuses on the investigation of the wake flow around a circular patch of cylinders with different solid volume fractions (SVF). The wake flow pattern was found to be dependent on the SVF and the flow stability factor S. A non-hydrostatic m... Read More about Non-hydrostatic modelling of shallow water flow around a circular array of emergent cylinders.

Wake modes behind a streamwisely-oscillating cylinder at constant and ramping frequencies (2019)
Journal Article
Hu, Z., Liu, J., Gan, L., & Xu, S. (2019). Wake modes behind a streamwisely-oscillating cylinder at constant and ramping frequencies. Journal of Visualization, 22(3), 505-527. https://doi.org/10.1007/s12650-019-00554-9

studied at Reynolds number Re = 360–460 which are observed by laser-induced fluorescence flow visualization technique. The forcing frequency fe ranges from 0 to 6.85 fs , where fs is the vortex shedding frequency behind a stationary cylinder, and the... Read More about Wake modes behind a streamwisely-oscillating cylinder at constant and ramping frequencies.

Data assimilation and resolvent analysis of turbulent flow behind a wall-proximity rib (2019)
Journal Article
He, C., Liu, Y., Gan, L., & Lesshafft, L. (2019). Data assimilation and resolvent analysis of turbulent flow behind a wall-proximity rib. Physics of Fluids, 31(2), Article 025118. https://doi.org/10.1063/1.5074151

This study aims to detect the unsteady features of the turbulent flow behind a wall-proximity rib using resolvent analysis, based on the mean flow field determined using an adjoint-based data assimilation (ABDA) model. The rib is located at gap ratio... Read More about Data assimilation and resolvent analysis of turbulent flow behind a wall-proximity rib.