Compressible two-phase flows
Large Time-Step Numerical Scheme for the Seven-Equation Model of Compressible Two-Phase Flows
... 1 Introduction We are interested in the computation of compressible two-phase flows with the so-called two-fluid two-pressure or seven-equation model. It was first proposed in ...
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Phase Change Simulation for Isothermal Compressible Two-Phase Flows
... of two-phase flows. These flows are involved in a wide range of industrial applications from boiling crisis prediction to cavitating ...dynamical phase change between two ...
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A Simple Finite-Volume Method for Compressible Isothermal Two-Phase Flows Simulation
... interface compressible two-phase flows using different numbers of independent ...for phase change ...that two-phase flows with mass transfer can also be modelled ...
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Finite volume/finite element schemes for compressible two-phase flows inheterogeneous and anisotropic porous media
... the two-phase flow models have been extensively implemented and studied in the recent ...the two-point flux approximation ...immiscible flows is provided in [ 103 ...incompressible ...
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Theorical modelling and numerical simulation of compressible dense and dilute two-phase flows
... to compressible fluid ...and two methods based on Ghost cells (Fedkiw et ...to two-way coupling and illustrated to several examples involving shock wave interaction with solid particles as well as ...
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Coupling rigid bodies motion with single phase and two-phase compressible flows on unstructured meshes
... to compressible fluid ...and two methods based on Ghost cells (Fedkiw et ...to two-way coupling and illustrated to several examples involving shock wave interaction with solid particles as well as ...
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Positivity-preserving finite volume scheme for compressible two-phase flows in anisotropic porous media: The densities are depending on the physical pressures
... on the mesh. Contrary to the ideas of [ 23 ], the point of the current scheme relies on a phase- by-phase ”sub”-unpwinding approach so that we can recover the coercivity-like property. It allows on a second ...
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A time splitting projection scheme for compressible two-phase flows. Application to the interaction of bubbles with ultrasound waves
... the compressible projection method strongly alleviates the time step restriction in comparison to an explicit HLLC ...a compressible projection method or a HLLC ...
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A Godunov-type method for the seven-equation model of compressible two-phase flow
... of compressible two-phase ...essentially two classes of models for describing such ...the two-phase fluid as a mixture and treating it as a sin- gle fluid with a fairly complex ...
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The coupling of homogeneous models for two-phase flows
... We consider the numerical coupling at a fixed spatial interface of two homogeneous models used for describing non isothermal compressible two phase flows. More precisely, we concentrate ...
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A simple and fast phase transition relaxation solver for compressible multicomponent two-phase flows
... accurate phase transition solver dedicated to unsteady multiphase flow ...liquid phase and its corresponding vapor ...gas phase instead of pure vapor, a necessary improvement in most practical ...
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Riemann solver with internal reconstruction (RSIR) for compressible single-phase and non-equilibrium two-phase flows
... few two-phase flow models are hyperbolic in the whole range of ...dispersed phase sound speed corresponds to the one of the pure phase, while this phase is not continuous and unable to ...
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Simulation of Free Surface Compressible Flows Via a Two Fluid Model
... where R, L are matrices composed of right and left eigenvectors correspondingly, and Λ = diag( λ 1 , . . . , λ m ) is the diagonal matrix of eigenvalues of the Jacobian. This definition gives the first “direct” method ...
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Two phase compressible and immiscible flow in porous media : mathematical and numerical analysis
... water-gas flows in porous media is ...for compressible and immiscible flow in porous ...fluid, compressible fluids requires more powerful ...a two or three dimensional porous me- dium and ...
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A high-order cell-centered Lagrangian scheme for compressible fluid flows in two-dimensional cylindrical geometry
... with two polar grids characterized by the same zoning in the radial direction and two different angular ...these two different angular zonings. The small difference between the two curves ...
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An asymptotic preserving multi-dimensional ALE method for a system of two compressible flows coupled with friction
... t = t n t = t n +1 , Lagrangian t = t n +1 , ALE Figure 2: Left: at time t = t n , both fluid share the same mesh. Middle: at the end of the Lagrangian phase, one gets two di fferent meshes, one for each ...
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Towards eulerian-eulerian large eddy simulation of reactive two-phase flows
... dispersed phase are obtained by some kind of averaging method (for example by ensemble average section ...single phase flow: the Navier Stokes equations are obtained from kinetic theory of gases by ensemble ...
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Phase appearance or disappearance in two-phase flows
... 6 Conclusion In this paper, we have considered numerical schemes for multi-phase flow models when one of the phases appears or disappears. The causes of the difficulties that standard methods face in this ...
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Dynamics and Transfers in two phase flows with phase change in normal and microgravity conditions
... discussed two mechanisms identified that can dominate the largest fraction of the channel, bubbly and slug flow are mainly present in the channel whereas a significant part of the channel length is dominated by ...
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A high-order cell-centered Lagrangian scheme for two-dimensional compressible fluid flows on unstructured meshes
... Figure 24: Noh problem on a non-conformal grid. Density versus cell centroid radius at t = 0.6. is very well resolved without any spurious oscillations. We have also run the Sedov problem using the same initial ...
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