42 citations · 184 across the 10 of their papers we have counts for
10 papers
Transport of inertial spherical particles in compressible turbulent boundary layers
Ming Yu, Lihao Zhao, Xianxu Yuan +1
In the present study, we perform direct numerical simulations of compressible turbulent boundary layers at the free stream Mach number of 2 ~ 6 laden with dilute phase of spherical…
Active gyrotactic stability of microswimmers using hydromechanical signals
Jingran Qiu, Navid Mousavi, Lihao Zhao +1
Many plankton species undergo daily vertical migration to large depths in the turbulent ocean. To do this efficiently, the plankton can use a gyrotactic mechanism, aligning them wi…
Navigation of micro-swimmers in steady flow: the importance of symmetries
J. Qiu, N. Mousavi, K. Gustavsson +3
Marine microorganisms must cope with complex flow patterns and even turbulence as they navigate the ocean. To survive they must avoid predation and find efficient energy sources. A…
Turbulence modulations and drag reduction by inertialess spheroids in turbulent channel flow
Ze Wang, Chun-Xiao Xu, Lihao Zhao
Previous studies on nonspherical particle-fluid interaction were mostly confined to elongated fiber-like particles, which were observed to induce turbulence drag reduction. However…
Fluid inertial torque is an effective gyrotactic mechanism for settling elongated micro-swimmers
Jingran Qiu, Zhiwen Cui, Eric Climent +1
Marine plankton are usually modeled as settling elongated micro-swimmers. For the first time, we consider the torque induced by fluid inertia on such swimmers, and we discover that…
Effects of the quiescent core in turbulent channel flow on transport and clustering of inertial particles
Yucheng Jie, Helge I. Andersson, Lihao Zhao
The existence of a quiescent core (QC) in the center of turbulent channel flows was demonstrated in recent experimental and numerical studies. The QC-region, which is characterized…
Inertial torque on a small spheroid in a stationary uniform flow
F. Jiang, L. Zhao, H. I. Andersson +3
How anisotropic particles rotate and orient in a flow depends on the hydrodynamic torque they experience. Here we compute the torque acting on a small spheroid in a uniform flow by…
Alignment statistics of rods with the Lagrangian stretching direction in a channel flow
Z. Cui, A. Dubey, L. Zhao +1
In homogeneous isotropic turbulence, slender rods are known to align with the Lagrangian stretching direction. However, how the degree of alignment depends on the aspect ratio of t…
Swimming strategy of settling elongated microswimmers by reinforcement learning
Jingran Qiu, Weixi Huang, Chunxiao Xu +1
Particular types of plankton in aquatic ecosystems can coordinate their motion depending on the local flow environment to reach regions conducive to their growth or reproduction. I…
Passive directors in turbulence
L. Zhao, K. Gustavsson, R. Ni +4
In experiments and numerical simulations we measured angles between the symmetry axes of small spheroids advected in turbulence ("passive directors"). Since turbulent strains tend…