Particle-Laden and Droplet-Laden Two-Phase Flows Past Bodies (a Review)

Varaksin, A. Yu.; Ryzhkov, Sergei V.

doi:10.3390/sym15020388

Cited by 14 publications

(8 citation statements)

References 92 publications

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“…Recent works [126][127][128][129][130][131][132][133] illustrate this approach well. In addition, we note that different vortices can form under different conditions [134][135][136][137][138][139][140][141].…”

Section: Main Mechanisms Of Tornadogenesismentioning

confidence: 87%

Mathematical Modeling of Structure and Dynamics of Concentrated Tornado-like Vortices: A Review

Varaksin

Ryzhkov

2023

Mathematics

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Mathematical modeling is the most important tool for constructing the theory of concentrated tornado-like vortices. A review and analysis of computational and theoretical works devoted to the study of the generation and dynamics of air tornado-like vortices has been conducted. Models with various levels of complexity are considered: a simple analytical model based on the Bernoulli equation, an analytical model based on the vorticity equation, a new class of analytical solutions of the Navier–Stokes equations for a wide class of vortex flows, and thermodynamic models. The approaches developed to date for the numerical simulation of tornado-like vortices are described and analyzed. Considerable attention is paid to developed approaches that take into account the two-phase nature of tornadoes. The final part is devoted to the analysis of modern ideas about the tornado, concerning its structure and dynamics (up to the breakup) and the conditions for its occurrence (tornadogenesis). Mathematical modeling data are necessary for interpreting the available field measurements while also serving as the basis for planning the physical modeling of tornado-like vortices in the laboratory.

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Section: Main Mechanisms Of Tornadogenesismentioning

confidence: 87%

Mathematical Modeling of Structure and Dynamics of Concentrated Tornado-like Vortices: A Review

Varaksin

Ryzhkov

2023

Mathematics

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“…The goal of this research is the development of a mathematical model as well suited as possible to the experimental conditions and the systematic numerical study of discharges in gases for a wide range of variation in basic parameters of the magneto plasma compressor and the ambient gas environment based on this model. The plasma formation processes of a magneto plasma compressor discharge in gas are generally three dimensional and some fluctuations are caused both by spatial and temporal inhomogeneity [15][16][17][18][19][20][21][22][23][24][25]. The full model is presented in the literature [12,14,19].…”

Section: Model Of the Mpc Discharge And Numerical Solution Methodsmentioning

confidence: 99%

Simulation of Parameters of Plasma Dynamics of a Magneto Plasma Compressor

2023

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The main purpose of this article is to study the features of the structure and spectral brightness characteristics of pulsed emitting discharges of the magneto plasma compressor type in dense gases over a wide range of energy–power parameters. A numerical simulation of plasma dynamic magneto plasma compressor discharge in gases is carried out. Different quasi-stationary regimes have been studied and the main characteristics have been estimated.

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“…(1) aerodynamic drag force, (2) gravitational forces (Archimedes forces), (3) Safmans' force, (4) Magnus' force, (5) the force of thermophoresis, (6) the force of turbofreezing, (7) the force of diffusiophoresis, (8) centrifugal force, (9) electrostatic forces, and (10) wall power.…”

Section: Multiplicity Of Forces Acting On Particlesmentioning

confidence: 99%

“…There are three dimensionless criteria listed in [28,29]: Stk f , Stk L , and Stk K , representing Stokes numbers in averaged, large-scale, and small-scale fluctuation movements, respectively.…”

Section: Stokes Numbersmentioning

confidence: 99%

Mathematical Modeling of Gas-Solid Two-Phase Flows: Problems, Achievements and Perspectives (A Review)

Varaksin

Ryzhkov

2023

Mathematics

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Mathematical modeling is the most important tool for constructing theories of different kinds of two-phase flows. This review is devoted to the analysis of the introduction of mathematical modeling to two-phase flows, where solid particles mainly serve as the dispersed phase. The main problems and features of the study of gas-solid two-phase flows are included. The main characteristics of gas flows with solid particles are discussed, and the classification of two-phase flows is developed based on these characteristics. The Lagrangian and Euler approaches to modeling the motion of a dispersed phase (particles) are described. A great deal of attention is paid to the consideration of numerical simulation methods that provide descriptions of turbulent gas flow at different hierarchical levels (RANS, LES, and DNS), different levels of description of interphase interactions (one-way coupling (OWC), two-way coupling (TWC), and four-way coupling (FWC)), and different levels of interface resolution (partial-point (PP) and particle-resolved (PR)). Examples of studies carried out on the basis of the identified approaches are excluded, and they are also excluded for the mathematical modeling of various classes of gas-solid two-phase flows.

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Particle-Laden and Droplet-Laden Two-Phase Flows Past Bodies (a Review)

Cited by 14 publications

References 92 publications

Mathematical Modeling of Structure and Dynamics of Concentrated Tornado-like Vortices: A Review

Mathematical Modeling of Structure and Dynamics of Concentrated Tornado-like Vortices: A Review

Simulation of Parameters of Plasma Dynamics of a Magneto Plasma Compressor

Mathematical Modeling of Gas-Solid Two-Phase Flows: Problems, Achievements and Perspectives (A Review)

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