Particle transport in a turbulent pipe flow: direct numerical simulations, phenomenological modelling and physical mechanisms

T Zahtila, L Chan, A Ooi, J Philip - Journal of Fluid Mechanics, 2023 - cambridge.org
In particle-laden turbulent wall flows, transport of particles towards solid walls is
phenomenologically thought to be governed by the wall-normal turbulence intensity …

On the energy transport and heat transfer efficiency in radiatively heated particle-laden Rayleigh–Bénard convection

W Yang, ZH Wan, Q Zhou, Y Dong - Journal of Fluid Mechanics, 2022 - cambridge.org
We investigate the energy transport and heat transfer efficiency in turbulent Rayleigh–
Bénard (RB) convection laden with radiatively heated inertial particles. Direct numerical …

Scaling of turbulence and microphysics in a convection–cloud chamber of varying height

S Thomas, F Yang, M Ovchinnikov… - Journal of Advances …, 2023 - Wiley Online Library
The convection–cloud chamber enables measurement of aerosol and cloud microphysics,
as well as their interactions, within a turbulent environment under steady‐state conditions …

Mechanism of rapid settling algal flocs formation in a novel fluidized bed flocculator

X Chen, C Li, Y Zhang, P Cao, C Wang, X Zhang, Z Lin… - Algal Research, 2024 - Elsevier
Coagulation-sedimentation has been widely used for the emergency removal of harmful
algal blooms (HABs). The technical challenge of how to construct special structured flocs in …

Study on the characteristics and mechanism of the flocculation behaviour in a novel fluidized bed flocculator

Z Lin, C Li, X Zhang, H Zhang - Separation and Purification Technology, 2023 - Elsevier
Fluidized bed flocculator is a novel and efficient flocculation reactor. It has an efficiency that
directly affected by flow field parameters. However, the structural characteristics of flocs and …

How does two-way coupling modify particle settling and the role of multiscale preferential sweeping?

J Tom, M Carbone, AD Bragg - Journal of Fluid Mechanics, 2022 - cambridge.org
For one-way coupled (1WC) flows, Tom & Bragg (J. Fluid Mech., vol. 871, 2019, pp. 244–
270) advanced the analysis of Maxey (J. Fluid Mech., vol. 174, 1987, pp. 441–465), which …

Settling strongly modifies particle concentrations in wall-bounded turbulent flows even when the settling parameter is asymptotically small

AD Bragg, DH Richter, G Wang - Physical Review Fluids, 2021 - APS
We explore the role of gravitational settling on inertial particle concentrations in a wall-
bounded turbulent flow. While it may be thought that settling can be ignored when the …

A Reinterpretation of Phenomenological Modeling Approaches for Lagrangian Particles Settling in a Turbulent Boundary Layer

AP Grace, DH Richter, AD Bragg - Boundary-Layer Meteorology, 2024 - Springer
It has long been known that under the right circumstances, inertial particles (such as sand,
dust, pollen, or water droplets) settling through the atmospheric boundary layer can …

Particle resolved simulation of sediment transport by a hybrid parallel approach

Z Zhu, R Hu, Y Lei, L Shen, X Zheng - International Journal of Multiphase …, 2022 - Elsevier
Sediment transport over an erodible sediment bed is studied by particle resolved
simulations with a hybrid parallel approach. To overcome the challenges of load imbalance …

Progress on mechanisms of mesoscale structures and mesoscale drag model in gas-solid fluidized beds

M JIANG, Q ZHOU - CIESC Journal, 2022 - hgxb.cip.com.cn
In gas-solid fluidized beds, spatiotemporal mutiscale structures caused by the intrinsic
instability of gas-solid flows have a large impact on the interphase interaction. Predicting …