On differences between deterministic and statistical models of the interphase region
T Wacławczyk - Acta Mechanica Sinica, 2022 - Springer
This paper reviews differences between the deterministic (sharp and diffuse) and statistical
models of the interphase region between the two-phases. In the literature this region is …
models of the interphase region between the two-phases. In the literature this region is …
A consistent solution of the re-initialization equation in the conservative level-set method
T Wacławczyk - Journal of Computational Physics, 2015 - Elsevier
In this paper, a new re-initialization method for the conservative level-set function is put
forward. First, it has been shown that the re-initialization and advection equations of the …
forward. First, it has been shown that the re-initialization and advection equations of the …
On a relation between the volume of fluid, level-set and phase field interface models
T Wacławczyk - International Journal of Multiphase Flow, 2017 - Elsevier
This paper discusses a relation between the re-initialization equation of the level-set
functions derived by Wacławczyk [J. Comput. Phys., 299 (2015)] and the condition for the …
functions derived by Wacławczyk [J. Comput. Phys., 299 (2015)] and the condition for the …
Comparison of different techniques to calculate properties of atmospheric turbulence from low-resolution data
M Wacławczyk, AS Gozingan, J Nzotungishaka… - Atmosphere, 2020 - mdpi.com
In this work we study different techniques to estimate basic properties of turbulence, that is
its characteristic velocity and length scale from low-resolution data. The methods are based …
its characteristic velocity and length scale from low-resolution data. The methods are based …
Modeling of non-equilibrium effects in intermittency region between two phases
T Wacławczyk - International Journal of Multiphase Flow, 2021 - Elsevier
This paper concerns modeling of the evolution of the intermittency region between two
weakly miscible phases due to temporal and spatial variations of its characteristic length …
weakly miscible phases due to temporal and spatial variations of its characteristic length …
Modelling of high-velocity free-surface flows: a revised interfacial area approach
A Vikhansky - Journal of Hydraulic Research, 2024 - Taylor & Francis
The specific interface area transport equation is derived from first principles, and a closure
model for turbulent flow is proposed. The flow is modelled by a two-phase method providing …
model for turbulent flow is proposed. The flow is modelled by a two-phase method providing …
A priori study for the modelling of velocity–interface correlations in the stratified air–water flows
M Wacławczyk, T Wacławczyk - International Journal of Heat and Fluid …, 2015 - Elsevier
This work concerns the modelling of stratified two-phase turbulent flows with interfaces. We
consider an equation for an intermittency function α (x, t) which denotes the probability of …
consider an equation for an intermittency function α (x, t) which denotes the probability of …
[HTML][HTML] Interface retaining coarsening of multiphase flows
Multiphase flows are characterized by sharp moving interfaces, separating different fluids or
phases. In many cases, the dynamics of the interface determines the behavior of the flow. In …
phases. In many cases, the dynamics of the interface determines the behavior of the flow. In …
Modelling of turbulence-interface interactions in stratified two-phase flows
T Wacławczyk, M Wacławczyk… - Journal of Physics …, 2014 - iopscience.iop.org
In this work we describe interactions between turbulence and water-air surface in the
ensemble-averaged picture where, instead of a sharp interface between the phases we deal …
ensemble-averaged picture where, instead of a sharp interface between the phases we deal …
Topological changes due to non-equilibrium effects by means of the statistical model of two-phase flow
T Wacławczyk - arXiv preprint arXiv:2109.15058, 2021 - arxiv.org
This paper presents the first results of the two-phase flow simulation obtained using recently
introduced physical, mathematical and numerical model of the intermittency region between …
introduced physical, mathematical and numerical model of the intermittency region between …