High Reynolds number turbulent flow past a rotating cylinder

Discrete vortex simulation of the separated flow around a rotating circular cylinder at high Reynolds number

The separated flow around a rotating circular cylinder is investigated by the discrete vortex method combined with the boundary layer theory. The Keller Box method is used to solve the laminar boundary layer in order to determine the separation points on the upper and the lower sides of the rotating circular cylinder. The nascent vortices are then introduced near the separation points. A discre...

Surface-sampled simulations of turbulent flow at high Reynolds number

Funding information European Commission Horizon 2020, Grant/Award Number: 671571; Engineering and Physical Sciences Research Council (EPSRC), Grant/Award Number: EP/L000261/1 Summary A new approach to turbulence simulation, based on a combination of large eddy simulation (LES) for the whole flow and an array of non–space-filling quasi-direct numerical simulations (QDNS), which sample the respon...

Lateral dispersion in random cylinder arrays at high Reynolds number

Laser-induced fluorescence was used to measure the lateral dispersion of passive solute in random arrays of rigid, emergent cylinders of solid volume fraction φ=0.010– 0.35. Such densities correspond to those observed in aquatic plant canopies and complement those in packed beds of spheres, where φ 0.5. This paper focuses on pore Reynolds numbers greater than Res =250, for which our laboratory ...

Structure and dynamics of low Reynolds number turbulent pipe flow.

Using large-scale numerical calculations, we explore the proper orthogonal decomposition of low Reynolds number turbulent pipe flow, using both the translational invariant (Fourier) method and the method of snapshots. Each method has benefits and drawbacks, making the 'best' choice dependent on the purpose of the analysis. Owing to its construction, the Fourier method includes all the flow fiel...

Effect of Reynolds Number in the Turbulent-flow Range