5 papers · 1 filter
Learning to traverse convective flows at moderate to high Rayleigh numbers
Ao Xu, Hua-Lin Wu, Ben-Rui Xu +1
We study the navigation of a self-propelled inertial particle in two-dimensional Rayleigh-Bénard convection at Prandtl number and cell aspect ratio for Rayleigh n…
Revisit eddy viscosity in pressure-driven wall turbulence at high Reynolds number
Ben-Rui Xu, Ao Xu
We investigate eddy-viscosity distributions in pressure-driven wall turbulence for three canonical configurations: plane closed-channel flow, open-channel flow with a free-slip sur…
Velocity dip in turbulent mixed convection of an open Poiseuille-Rayleigh-Bénard channel
Ben-Rui Xu, Ao Xu, Heng-Dong Xi
We study the emergence of a velocity-dip phenomenon in turbulent mixed convection in open Poiseuille-Rayleigh-Bénard (PRB) channels with a free-slip upper boundary. Three-dimensio…
Interpolation-supplemented lattice Boltzmann simulation of thermal convection on non-uniform meshes
Ao Xu, Zheng Zhao, Ben-Rui Xu +1
We present a systematic evaluation of an interpolation-supplemented lattice Boltzmann method (ISLBM) for simulating buoyancy-driven thermal convection on non-uniform meshes. The IS…
Particle transport and deposition in wall-sheared thermal turbulence
Ao Xu, Ben-Rui Xu, Heng-Dong Xi
We studied the transport and deposition behaviour of point particles in Rayleigh-Bénard convection cells subjected to Couette-type wall shear. Direct numerical simulations (DNSs)…