Computer Physics Communications, ISSN 0010-4655, 06/2020, Volume 251, p. 107093

ECOGEN, a new open-source computational fluid dynamics code is presented. It is a multi-model tool devoted to the simulation of compressible flows. A large...

Multiphysics | Unstructured mesh | Multiphase flows | CFD code | Adaptive mesh refinement | Compressible | BUBBLE | 2-PHASE FLOW | LIQUID | ATOMIZATION | PHYSICS, MATHEMATICAL | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | HIGH-RESOLUTION SCHEMES | RELAXATION PROCEDURES | PHASE-TRANSITION | DYNAMICS | NUMERICAL-SIMULATION | DIFFUSE INTERFACE MODEL

Multiphysics | Unstructured mesh | Multiphase flows | CFD code | Adaptive mesh refinement | Compressible | BUBBLE | 2-PHASE FLOW | LIQUID | ATOMIZATION | PHYSICS, MATHEMATICAL | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | HIGH-RESOLUTION SCHEMES | RELAXATION PROCEDURES | PHASE-TRANSITION | DYNAMICS | NUMERICAL-SIMULATION | DIFFUSE INTERFACE MODEL

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 08/2017, Volume 343, pp. 186 - 200

This paper presents an accurate and robust reinitialization equation for the conservative level set that does not significantly deform stationary surfaces. The...

Reinitialization | Incompressible flow | Multiphase flows | Conservative level set | Accurate conservative level set | COMPRESSIBLE FLOWS | GRIDS | RE-INITIALIZATION EQUATION | ATOMIZATION | ALGORITHMS | PHYSICS, MATHEMATICAL | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | FRAMEWORK | FLUID METHOD | COMPUTATION | 2-PHASE FLOWS | EFFICIENT | Aerospace engineering

Reinitialization | Incompressible flow | Multiphase flows | Conservative level set | Accurate conservative level set | COMPRESSIBLE FLOWS | GRIDS | RE-INITIALIZATION EQUATION | ATOMIZATION | ALGORITHMS | PHYSICS, MATHEMATICAL | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | FRAMEWORK | FLUID METHOD | COMPUTATION | 2-PHASE FLOWS | EFFICIENT | Aerospace engineering

Journal Article

Applied Mathematics and Computation, ISSN 0096-3003, 02/2018, Volume 319, pp. 499 - 509

Simulation of transonic flow of steam with phase changes represents rather complex problem. One has to consider several simplifications to obtain a flow model,...

Finite volume method | Turbine cascade | Nozzle | Condensation | Wet steam | MATHEMATICS, APPLIED | COMPRESSIBLE 2-PHASE FLOW | PERFORMANCE | CASCADE | NOZZLES | MODEL | PREDICTION | TURBINE | CONDENSING STEAM | NUCLEATION | Product development | Turbines | Methods

Finite volume method | Turbine cascade | Nozzle | Condensation | Wet steam | MATHEMATICS, APPLIED | COMPRESSIBLE 2-PHASE FLOW | PERFORMANCE | CASCADE | NOZZLES | MODEL | PREDICTION | TURBINE | CONDENSING STEAM | NUCLEATION | Product development | Turbines | Methods

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 2009, Volume 228, Issue 5, pp. 1678 - 1712

Numerical approximation of the five-equation two-phase flow of Kapila et al. [A.K. Kapila, R. Menikoff, J.B. Bdzil, S.F. Son, D.S. Stewart, Two-phase modeling...

Godunov | Multiphase | Multiphysic | Real gases | Multifluid | Cavitation | Hyperbolic systems | 2-PHASE FLOW | LEVEL-SET | EQUATIONS | FRONT TRACKING | MODEL | COMPUTATIONS | PHYSICS, MATHEMATICAL | GODUNOV METHOD | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | PROJECTION METHOD | GRANULAR-MATERIALS | Wave propagation | Algorithms | Energy conservation | Analysis | Soil structure | Models | Universities and colleges | Methods | Electric power transmission | GASES | GRANULAR MATERIALS | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | APPROXIMATIONS | RESOLUTION | WAVE PROPAGATION | EXACT SOLUTIONS | RELAXATION | ALGORITHMS | SIMULATION | TWO-PHASE FLOW | ASYMPTOTIC SOLUTIONS | SHOCK WAVES | ENERGY CONSERVATION | NEWTON METHOD | COMPRESSIBLE FLOW | INTERFACES | SOUND WAVES | FLOW MODELS | MULTIPHASE FLOW

Godunov | Multiphase | Multiphysic | Real gases | Multifluid | Cavitation | Hyperbolic systems | 2-PHASE FLOW | LEVEL-SET | EQUATIONS | FRONT TRACKING | MODEL | COMPUTATIONS | PHYSICS, MATHEMATICAL | GODUNOV METHOD | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | PROJECTION METHOD | GRANULAR-MATERIALS | Wave propagation | Algorithms | Energy conservation | Analysis | Soil structure | Models | Universities and colleges | Methods | Electric power transmission | GASES | GRANULAR MATERIALS | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | APPROXIMATIONS | RESOLUTION | WAVE PROPAGATION | EXACT SOLUTIONS | RELAXATION | ALGORITHMS | SIMULATION | TWO-PHASE FLOW | ASYMPTOTIC SOLUTIONS | SHOCK WAVES | ENERGY CONSERVATION | NEWTON METHOD | COMPRESSIBLE FLOW | INTERFACES | SOUND WAVES | FLOW MODELS | MULTIPHASE FLOW

Journal Article

Computers and Fluids, ISSN 0045-7930, 2009, Volume 38, Issue 9, pp. 1682 - 1696

The simulation of cavitating flows is a challenging problem both in terms of modelling the physics and developing robust numerical methodologies. Such flows...

COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | MECHANICS | TURBULENCE MODELS | COMPRESSIBLE FLOWS | EQUILIBRIUM-MODEL | UNSTEADY | LIQUID | EQUATIONS | COMPUTATIONS | 2-PHASE FLOWS | UNSTRUCTURED MESHES | SCHEMES | Thermodynamics | Models | Atmospheric nucleation | Analysis | Mechanics | Mechanics of the fluids | Fluids mechanics | Engineering Sciences | Physics

COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | MECHANICS | TURBULENCE MODELS | COMPRESSIBLE FLOWS | EQUILIBRIUM-MODEL | UNSTEADY | LIQUID | EQUATIONS | COMPUTATIONS | 2-PHASE FLOWS | UNSTRUCTURED MESHES | SCHEMES | Thermodynamics | Models | Atmospheric nucleation | Analysis | Mechanics | Mechanics of the fluids | Fluids mechanics | Engineering Sciences | Physics

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 2009, Volume 228, Issue 11, pp. 4012 - 4037

A front-tracking/ghost-fluid method is introduced for simulations of fluid interfaces in compressible flows. The new method captures fluid interfaces using...

Compressible gasâ€“water flow | Ghost-fluid method | Front-tracking method | Fluid interface | Compressible multiphase flow | Compressible gas-water flow | LEVEL SET METHOD | SHOCK-BUBBLE INTERACTION | 2-PHASE FLOW | INSTABILITY | NUMERICAL-METHOD | COMPUTATIONS | PHYSICS, MATHEMATICAL | GAS-DYNAMICS | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | MULTIMATERIAL FLOWS | CONSERVATIVE DIFFERENCE SCHEME | MULTIPHASE FLOW | Mechanical engineering | Analysis | Methods

Compressible gasâ€“water flow | Ghost-fluid method | Front-tracking method | Fluid interface | Compressible multiphase flow | Compressible gas-water flow | LEVEL SET METHOD | SHOCK-BUBBLE INTERACTION | 2-PHASE FLOW | INSTABILITY | NUMERICAL-METHOD | COMPUTATIONS | PHYSICS, MATHEMATICAL | GAS-DYNAMICS | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | MULTIMATERIAL FLOWS | CONSERVATIVE DIFFERENCE SCHEME | MULTIPHASE FLOW | Mechanical engineering | Analysis | Methods

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 02/2020, Volume 402, p. 109080

Numerical simulation of bubble dynamics and cavitation is challenging; even the seemingly simple problem of a collapsing spherical bubble is difficult to...

Bubble dynamics | Interface-capturing schemes | Multiphase flow | Diffuse-interface method | Compressible flow | 2-PHASE FLOW | DIFFERENCE SCHEME | LIQUID | VOLUME | SIMULATION | PHYSICS, MATHEMATICAL | DIFFUSE INTERFACE | NUMERICAL SCHEME | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | COLLAPSE | COMPRESSIBLE MULTIPHASE FLOWS | Collapse | Collapsing | Bubbles | Compressibility | Numerical analysis | Three dimensional flow | Computer simulation | Identification methods | Numerical methods | Mathematical models | Cavitation | Three dimensional models

Bubble dynamics | Interface-capturing schemes | Multiphase flow | Diffuse-interface method | Compressible flow | 2-PHASE FLOW | DIFFERENCE SCHEME | LIQUID | VOLUME | SIMULATION | PHYSICS, MATHEMATICAL | DIFFUSE INTERFACE | NUMERICAL SCHEME | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | COLLAPSE | COMPRESSIBLE MULTIPHASE FLOWS | Collapse | Collapsing | Bubbles | Compressibility | Numerical analysis | Three dimensional flow | Computer simulation | Identification methods | Numerical methods | Mathematical models | Cavitation | Three dimensional models

Journal Article

Physica D: Nonlinear Phenomena, ISSN 0167-2789, 04/2019, Volume 391, pp. 66 - 71

We consider two models of a compressible inviscid isentropic two-fluid flow. The first one describes the liquidâ€“gas two-phase flow. The second one can describe...

EXISTENCE | MATHEMATICS, APPLIED | 2-PHASE FLOW | STOKES SYSTEM | PHYSICS, MULTIDISCIPLINARY | BLOW-UP CRITERION | PHYSICS, FLUIDS & PLASMAS | STABILITY | BEHAVIOR | MODEL | PHYSICS, MATHEMATICAL | ASYMPTOTIC ANALYSIS | COMPRESSIBLE VORTEX SHEETS | GLOBAL WEAK SOLUTIONS

EXISTENCE | MATHEMATICS, APPLIED | 2-PHASE FLOW | STOKES SYSTEM | PHYSICS, MULTIDISCIPLINARY | BLOW-UP CRITERION | PHYSICS, FLUIDS & PLASMAS | STABILITY | BEHAVIOR | MODEL | PHYSICS, MATHEMATICAL | ASYMPTOTIC ANALYSIS | COMPRESSIBLE VORTEX SHEETS | GLOBAL WEAK SOLUTIONS

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 10/2018, Volume 371, pp. 870 - 895

In this paper we develop a conservative interface-interaction method dedicated to simulating multiple compressible fluids with sharp interfaces. Numerical...

Sharp interface method | Multi-resolution simulations | Level-set method | Interface scale separation | Compressible multi-material flows | SHOCK-BUBBLE INTERACTION | IMPLOSION | RECONSTRUCTION | MULTIPHASE FLOWS | ALGORITHMS | PHYSICS, MATHEMATICAL | SCHEME | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | MULTIFLUID | DYNAMICS | 2-PHASE FLOWS | SCALE SEPARATION | Conservatism | Laser-plasma interactions | Pellet fusion | Analysis | Methods

Sharp interface method | Multi-resolution simulations | Level-set method | Interface scale separation | Compressible multi-material flows | SHOCK-BUBBLE INTERACTION | IMPLOSION | RECONSTRUCTION | MULTIPHASE FLOWS | ALGORITHMS | PHYSICS, MATHEMATICAL | SCHEME | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | MULTIFLUID | DYNAMICS | 2-PHASE FLOWS | SCALE SEPARATION | Conservatism | Laser-plasma interactions | Pellet fusion | Analysis | Methods

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 01/2016, Volume 304, pp. 275 - 319

In this paper a new, simple and universal formulation of the HLLEM Riemann solver (RS) is proposed that works for general conservative and non-conservative...

Well-balanced scheme for single and two-layer shallow water equations | Path-conservative HLLEM Riemann solver | Conservation laws and general hyperbolic PDE with non-conservative terms | RMHD/MHD equations and nonlinear elasticity | Resolution of linearly degenerate intermediate waves | Euler equations with real equation of state and multiphase flows | COMPRESSIBLE 2-PHASE FLOW | DIFFERENCE-SCHEMES | PHYSICS, MATHEMATICAL | RELATIVISTIC MAGNETOHYDRODYNAMICS | STRUCTURED MESHES | SHALLOW-WATER EQUATIONS | SOURCE TERMS | PDE with non-conservative terms | GAS-DYNAMICS | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | GODUNOV-TYPE METHODS | Conservation laws and general hyperbolic | UNSTRUCTURED MESHES | FINITE-VOLUME SCHEMES | Conservatism | Analysis | Fluid dynamics | Environmental law | Nonlinear dynamics | Magnetohydrodynamics | Computation | Mathematical analysis | Mathematical models | Entropy | Dynamical systems | Riemann solver | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | MAGNETOHYDRODYNAMICS | TWO-PHASE FLOW | LAYERS | ELASTICITY | EIGENVALUES | NONLINEAR PROBLEMS | EIGENVECTORS | CONSERVATION LAWS | EQUATIONS OF STATE | FLOW MODELS | MULTIPHASE FLOW | ENTROPY

Well-balanced scheme for single and two-layer shallow water equations | Path-conservative HLLEM Riemann solver | Conservation laws and general hyperbolic PDE with non-conservative terms | RMHD/MHD equations and nonlinear elasticity | Resolution of linearly degenerate intermediate waves | Euler equations with real equation of state and multiphase flows | COMPRESSIBLE 2-PHASE FLOW | DIFFERENCE-SCHEMES | PHYSICS, MATHEMATICAL | RELATIVISTIC MAGNETOHYDRODYNAMICS | STRUCTURED MESHES | SHALLOW-WATER EQUATIONS | SOURCE TERMS | PDE with non-conservative terms | GAS-DYNAMICS | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | GODUNOV-TYPE METHODS | Conservation laws and general hyperbolic | UNSTRUCTURED MESHES | FINITE-VOLUME SCHEMES | Conservatism | Analysis | Fluid dynamics | Environmental law | Nonlinear dynamics | Magnetohydrodynamics | Computation | Mathematical analysis | Mathematical models | Entropy | Dynamical systems | Riemann solver | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | MAGNETOHYDRODYNAMICS | TWO-PHASE FLOW | LAYERS | ELASTICITY | EIGENVALUES | NONLINEAR PROBLEMS | EIGENVECTORS | CONSERVATION LAWS | EQUATIONS OF STATE | FLOW MODELS | MULTIPHASE FLOW | ENTROPY

Journal Article

International Journal of Heat and Mass Transfer, ISSN 0017-9310, 07/2018, Volume 122, pp. 1162 - 1171

â€¢The flow oscillation characteristics of PDO in a closed NC loop were obtained.â€¢The formation mechanism of PDO in the closed NC loop was analyzed and...

Compressible volume | Flow instability | Closed loop system | Pressure drop oscillations | Natural circulation | 2-PHASE FLOW | FORCED CIRCULATION | TUBE | MECHANISM | BOILING SYSTEMS | MODULAR REACTOR | ENGINEERING, MECHANICAL | INSTABILITIES | MECHANICS | THERMODYNAMICS | CHANNEL | WATER

Compressible volume | Flow instability | Closed loop system | Pressure drop oscillations | Natural circulation | 2-PHASE FLOW | FORCED CIRCULATION | TUBE | MECHANISM | BOILING SYSTEMS | MODULAR REACTOR | ENGINEERING, MECHANICAL | INSTABILITIES | MECHANICS | THERMODYNAMICS | CHANNEL | WATER

Journal Article

Journal of Computational Physics, ISSN 0021-9991, 08/2018, Volume 367, pp. 192 - 234

A pressure-based algorithm for the simulation of compressible interfacial flows is presented. The algorithm is based on a fully-coupled finite-volume framework...

Shock-capturing | Acoustics | Interfacial flows | Finite-volume methods | Compressible flows | Pressure-based methods | SHOCK-BUBBLE INTERACTION | 2-PHASE FLOW | UNIFIED FORMULATION | ARBITRARY MESHES | PHYSICS, MATHEMATICAL | GHOST FLUID METHOD | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | HIGH-RESOLUTION SCHEMES | INCOMPRESSIBLE FLOWS | COMPUTATIONAL METHOD | NUMERICAL-SIMULATION | Algorithms | Acoustic properties

Shock-capturing | Acoustics | Interfacial flows | Finite-volume methods | Compressible flows | Pressure-based methods | SHOCK-BUBBLE INTERACTION | 2-PHASE FLOW | UNIFIED FORMULATION | ARBITRARY MESHES | PHYSICS, MATHEMATICAL | GHOST FLUID METHOD | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | HIGH-RESOLUTION SCHEMES | INCOMPRESSIBLE FLOWS | COMPUTATIONAL METHOD | NUMERICAL-SIMULATION | Algorithms | Acoustic properties

Journal Article

Computer Physics Communications, ISSN 0010-4655, 12/2017, Volume 221, pp. 63 - 80

We propose efficient single-step formulations for reinitialization and extending algorithms, which are critical components of level-set based...

Reinitialization | Extending | Level set | Two-phase flow | Sharp-interface method | COMPRESSIBLE FLOWS | GRIDS | SOLVER | PHYSICS, MATHEMATICAL | FRONTS | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | DYNAMICS | VOLUME-OF-FLUID | 2-PHASE FLOWS | VOSET METHOD | EFFICIENT | Algorithms

Reinitialization | Extending | Level set | Two-phase flow | Sharp-interface method | COMPRESSIBLE FLOWS | GRIDS | SOLVER | PHYSICS, MATHEMATICAL | FRONTS | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | DYNAMICS | VOLUME-OF-FLUID | 2-PHASE FLOWS | VOSET METHOD | EFFICIENT | Algorithms

Journal Article

ESAIM-MATHEMATICAL MODELLING AND NUMERICAL ANALYSIS-MODELISATION MATHEMATIQUE ET ANALYSE NUMERIQUE, ISSN 0764-583X, 09/2019, Volume 53, Issue 5, pp. 1763 - 1795

This article is the first of two in which we develop a relaxation finite volume scheme for the convective part of the multiphase flow models introduced in the...

Multiphase ows | Godunov-type schemes | MATHEMATICS, APPLIED | Riemann problem | entropy-satisfying methods | relaxation techniques | PHASE-TRANSITIONS | STABILITY | 2-PHASE | hyperbolic PDEs | TO-DETONATION TRANSITION | Riemann solvers | finite volumes | compressible ows | Mechanics | Mechanics of the fluids | Mathematics | Analysis of PDEs | Numerical Analysis | Physics

Multiphase ows | Godunov-type schemes | MATHEMATICS, APPLIED | Riemann problem | entropy-satisfying methods | relaxation techniques | PHASE-TRANSITIONS | STABILITY | 2-PHASE | hyperbolic PDEs | TO-DETONATION TRANSITION | Riemann solvers | finite volumes | compressible ows | Mechanics | Mechanics of the fluids | Mathematics | Analysis of PDEs | Numerical Analysis | Physics

Journal Article

15.
Full Text
A finite-volume HLLC-based scheme for compressible interfacial flows with surface tension

Journal of Computational Physics, ISSN 0021-9991, 06/2017, Volume 339, pp. 46 - 67

Shock waves are often used in experiments to create a shear flow across liquid droplets to study secondary atomization. Similar behavior occurs inside of...

Capillary forces | Conservative level set | Interface capturing | Compressible multiphase | Interface compression | HLLC | Surface tension | 2-PHASE FLOW | MULTIPHASE FLOWS | PHYSICS, MATHEMATICAL | AXISYMMETRICAL LIQUID-DROPS | DIRECT NUMERICAL-SIMULATION | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | SECONDARY BREAKUP | MULTIMATERIAL FLOWS | FLUID METHOD | FRONT-TRACKING METHOD | WATER DROPLET | Analysis | Aerospace engineering | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | APPROXIMATIONS | SURFACE FORCES | ATOMIZATION | COMBUSTORS | COMPRESSION | SHOCK WAVES | COMPUTERIZED SIMULATION | DROPLETS | SURFACE TENSION | ACOUSTICS | MODIFICATIONS | CAPILLARIES | INTERFACES | DIFFUSION | MULTIPHASE FLOW | CAPTURE | LIQUIDS | RUNGE-KUTTA METHOD | SURFACES

Capillary forces | Conservative level set | Interface capturing | Compressible multiphase | Interface compression | HLLC | Surface tension | 2-PHASE FLOW | MULTIPHASE FLOWS | PHYSICS, MATHEMATICAL | AXISYMMETRICAL LIQUID-DROPS | DIRECT NUMERICAL-SIMULATION | COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS | TO-DETONATION TRANSITION | SECONDARY BREAKUP | MULTIMATERIAL FLOWS | FLUID METHOD | FRONT-TRACKING METHOD | WATER DROPLET | Analysis | Aerospace engineering | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS | APPROXIMATIONS | SURFACE FORCES | ATOMIZATION | COMBUSTORS | COMPRESSION | SHOCK WAVES | COMPUTERIZED SIMULATION | DROPLETS | SURFACE TENSION | ACOUSTICS | MODIFICATIONS | CAPILLARIES | INTERFACES | DIFFUSION | MULTIPHASE FLOW | CAPTURE | LIQUIDS | RUNGE-KUTTA METHOD | SURFACES

Journal Article