A second-order slip/jump boundary condition modified by nonlinear Rayleigh–Onsager dissipation factor

S Zeng, W Zhao, Z Jiang, W Chen - Physics of Fluids, 2023 - pubs.aip.org
A newly heuristic form of second-order slip/jump boundary conditions (BCs) for the Navier–
Stokes–Fourier (NSF) equations is proposed from the viewpoint of generalized …

State-specific slip boundary conditions in non-equilibrium gas flows: Theoretical models and their assessment

L Shakurova, I Armenise, E Kustova - Physics of Fluids, 2023 - pubs.aip.org
In this study, we develop and assess a new approach to modeling slip boundary conditions
in gas mixtures with coupled state-to-state vibrational-chemical kinetics and surface physical …

Peak heat flux prediction of hypersonic flow over compression ramp under vibrationally excited free-stream condition

F Liu, L Bao - Physics of Fluids, 2023 - pubs.aip.org
In hypersonic shock tunnel experiments, the high-temperature reservoir gas expands and
accelerates so rapidly that there is not enough time for vibrational energy relaxation. As a …

Thermophoresis and uniform flow in rarefied polyatomic gases: The role of constitutive relations and boundary conditions

S Saini, A Farkya, AS Rana - Physics of Fluids, 2023 - pubs.aip.org
Recently, Rana and Barve [“A second-order constitutive theory for polyatomic gases: Theory
and applications,” J. Fluid Mech. 958, A23 (2023)] developed a second-order coupled …

Viscous and thermal velocity slip coefficients via the linearized Boltzmann equation with ab initio potential

T Basdanis, D Valougeorgis, F Sharipov - Microfluidics and Nanofluidics, 2023 - Springer
The viscous and thermal velocity slip coefficients of various monatomic gases are computed
via the linearized classical Boltzmann equation, with ab initio potential, subject to Maxwell …

Slip and jump coefficients for general gas–surface interactions according to the moment method

R Li, Y Yang - Physics of Fluids, 2023 - pubs.aip.org
We develop a moment method based on the Hermite series of the arbitrary order to calculate
viscous-slip, thermal-slip, and temperature-jump coefficients for general gas-surface …

Gas-surface interaction in rarefied gas flows through long capillaries via the linearized Boltzmann equation with various boundary conditions

T Basdanis, G Tatsios, D Valougeorgis - Vacuum, 2022 - Elsevier
Reliable gas–surface interaction modeling is of major importance in consistent simulation of
rarefied gas flows with applications in vacuum technology and micro-electromechanical …

Molecular dynamics study on flow structure inside a thermal transpiration flow field

H Yamaguchi, G Kikugawa - Physics of Fluids, 2021 - pubs.aip.org
Thermal transpiration flow is a thermally driven flow from a cold part toward a hot part using
a temperature gradient along a wall under a high Knudsen number condition. Many studies …

Precision measurement of subcontinuum gas conduction within microconfinements

GI Acosta, M Hood, M Ghashami - Physical Review Research, 2023 - APS
Subcontinuum gas conduction is an essentially important phenomenon in disparate fields of
applications ranging from aerospace vehicles to biomedical sensors, and has been the …

[PDF][PDF] Effect of slip boundary conditions on nonequilibrium reacting air flows

L Shakurova, I Armenise, E Kustova - J. Theoret. Appl. Mech, 2023 - jtambg.eu
We study the effect of slip boundary conditions on the kinetics, dynamics, and heat transfer
in a strongly nonequilibrium flow with coupled vibrational relaxation, state-specific gas …