The incipient motion safety factor of sediment considers the coupling between the surface and subsurface flows under multi-motion modes

D Li, S Zhang, Z Ni, Z Zhai - Journal of Hydrology, 2024 - Elsevier
The incipient movement of sediment particles in natural rivers under the action of water
scour has remained a key issue in river sediment movement research. In this study, we …

Thin film dynamics using lattice Boltzmann method: Role of aspect ratio and surface wettability gradient

G Singh, N Tiwari - Physics of Fluids, 2022 - pubs.aip.org
This study investigates the possibility of solving film problems using the phase-field lattice
Boltzmann method (LBM). The mesoscopic nature of fluid interface makes the lattice …

Long-wave instabilities of a power-law fluid flowing over a heated, uneven and porous incline: A two-sided model

JP Pascal, A Vacca - Journal of Non-Newtonian Fluid Mechanics, 2024 - Elsevier
The stability conditions of a two-dimensional gravity-driven flow of a thin layer of a power-
law fluid flowing over a heated, uneven, inclined porous surface are investigated. A two …

Optimization of the blow-off efficiency of kerosene adhering to the inner wall of chambers with complex structures

W Jing, M Xiang, Q Gao, F Wu - Physics of Fluids, 2024 - pubs.aip.org
The research objective of this paper is to obtain an efficient space engine chamber wall
adherent kerosene blow-off solution, the research methodology uses computational fluid …

On the fingering instability of a simultaneous thermocapillary and solutocapillary driven droplet

C Li, H Su, J Tong, X Ye - Physics of Fluids, 2022 - pubs.aip.org
We study the fingering instability in a droplet simultaneously induced to spread by a
surfactant and temperature. The use of the lubrication approximation yields coupled …

Stability of traveling waves of a thermoviscous liquid film down the outer surface of a cylinder

G Singh, N Tiwari - Physical Review Fluids, 2024 - APS
A liquid film coating a cylindrical substrate is unstable to interfacial disturbances governed
by Rayleigh-plateau instability. These initial disturbances grow in time and, beyond …

Effect of wall slip on vertical film drainage in presence of soluble surfactants

C Li, H Xiao, R Jiang, X Ye - Physics of Fluids, 2021 - pubs.aip.org
A mathematical model is established to investigate a vertical gravity-driven drainage flow
containing a soluble surfactant when considering the effect of wall slip. The lubrication …

The Mechanism of Flow Patterns and Rivulet Instability in Gravity-Driven Film Flow on a Porous Wall with Uniform Heating

C Ma, G Wang, C Yu, Z Li - International Journal of Applied …, 2022 - World Scientific
Properties of porous mediums have significant impacts on the spreading pattern of falling-
film along a vertical heated wall. In this paper, we investigate the combined effect of porosity …

Thermocapillary fingering of a gravity-driven self-rewetting fluid film flowing down a vertical slippery wall

C Ma, J Liu - Journal of Fluids Engineering, 2022 - asmedigitalcollection.asme.org
The surface tension of a self-rewetting fluid (SRF) has a nonmonotonic variation with the
increase of temperature, implying potential applications in many industrial fields. In this …