Multiscale multiphase flow simulations using interface capturing and Lagrangian particle tracking

L Li, B Jiang, G Wei, X Li, Z Zhu - Physics of Fluids, 2022 - pubs.aip.org
Numerical simulations of multiphase flows with both interfaces and discrete particles are
challenging because they possess a wide range of length and time scales. Meanwhile, the …

Turbulent boundary layer over porous media with wall-normal permeability

Z Feng, Q Ye - Physics of Fluids, 2023 - pubs.aip.org
Porous walls are a widely used passive flow control technique, which shows potential in
reducing skin friction and mitigating flow-introduced noise. In the present study, porous …

Drag reduction by means of an array of staggered circular cavities at moderate Reynolds numbers

F Scarano, MC Jacob, ER Gowree - International Journal of Heat and Fluid …, 2023 - Elsevier
Further insight into the physics of boundary layers developing over an array of circular
cavities at moderate Reynolds numbers (R e θ up to 3400) is gained from hot wire boundary …

Flow dynamics in lateral vegetation cavities constructed by an array of emergent vegetation patches along the open-channel bank

M Liu, Z Yang, B Ji, W Huai, H Tang - Physics of Fluids, 2022 - pubs.aip.org
The hydrodynamics in a straight rectangular open channel containing novel lateral cavities
constructed by an array of square emergent vegetation patches discontinuously distributed …

Experimental study on drag reduction of the turbulent boundary layer via porous media under nonzero pressure gradient

H Du, Q Li, Q Zhang, W Zhang, L Yang - Physics of Fluids, 2022 - pubs.aip.org
The complex surface of an aircraft generates a nonzero pressure gradient flow. In this study,
the boundary conditions of favorable and adverse pressure gradients are constructed in a …

Inner-scaled Helmholtz resonators with grazing turbulent boundary layer flow

G Dacome, R Siebols, WJ Baars - arXiv preprint arXiv:2308.07776, 2023 - arxiv.org
Response details are presented of small-scale Helmholtz resonators excited by grazing
turbulent boundary layer flow. A particular focus lies on scaling of the resonance, in relation …

Coherent structures, turbulence intermittency, and anisotropy of gravity currents propagating on a rough and porous bed

D Han, Y Guo, P Jiao, Y Yuan, YT Lin, Z He - Physics of Fluids, 2023 - pubs.aip.org
This study experimentally investigated the impacts of rough and porous (RP) bed and
sedimentation processes on the coherent structures, turbulence intermittency, and …

Finite-length porous surfaces for control of a turbulent boundary layer

A Jafari, B Cazzolato, M Arjomandi - Physics of Fluids, 2022 - pubs.aip.org
This study investigates the potential of finite-length porous surfaces with a subsurface
chamber for the control of the turbulent boundary layer. The effect of the subsurface chamber …

Frequency-tuned surfaces for passive control of wall-bounded turbulent flow–a resolvent analysis study

A Jafari, BJ McKeon, M Arjomandi - Journal of Fluid Mechanics, 2023 - cambridge.org
The potential of frequency-tuned surfaces as a passive control strategy for reducing drag in
wall-bounded turbulent flows is investigated using resolvent analysis. These surfaces are …

Numerical investigation on flow and aerothermal characteristics of rarefied hypersonic flows over slender cavities

G Guo, Q Luo, J Wu - Aerospace Science and Technology, 2024 - Elsevier
Flow and aerothermal characteristics of rarefied hypersonic flows passing through slender
cavities are investigated comprehensively using the direct simulation Monte Carlo (DSMC) …