Results 11 to 20 of about 11,086 (157)
rp‐adaptation for compressible flows [PDF]
International Journal for Numerical Methods in Engineering, 2020 AbstractWe present a novel rp‐adaptation strategy for high‐fidelity simulations of compressible inviscid flows with shocks. The mesh resolution in regions of flow discontinuities is increased by using a variational optimizer to r‐adapt the mesh and cluster degrees of freedom there.
Julian Marcon +4 more
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Population Genetics in Compressible Flows
Physical Review Letters, 2012 We study competition between two biological species advected by a compressible velocity field. Individuals are treated as discrete Lagrangian particles that reproduce or die in a density-dependent fashion. In the absence of a velocity field and fitness advantage, number fluctuations lead to a coarsening dynamics typical of the stochastic Fisher ...
Pigolotti, Simone +3 more
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Alfvén Instability in a Compressible Flow [PDF]
Physical Review Letters, 2008 A new ideal magnetohydrodynamic instability is presented. It is shown that linear incompressible Alfvénic disturbances can get over-reflected and exponentially amplified in compressible plasma flows. A simple and transparent stability criterion for a two-layer model is derived.
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Multidimensional transonic shock waves and free boundary problems
Bulletin of Mathematical Sciences, 2022 We are concerned with free boundary problems arising from the analysis of multidimensional transonic shock waves for the Euler equations in compressible fluid dynamics.
Gui-Qiang G. Chen, Mikhail Feldman
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Numerical solution of inviscid and viscous laminar and turbulent flow around the airfoil
EPJ Web of Conferences, 2016 This work deals with the 2D numerical solution of inviscid compressible flow and viscous compressible laminar and turbulent flow around the profile. In a case of turbulent flow algebraic Baldwin-Lomax model is used and compared with Wilcox k-omega model.
Slouka Martin, Kozel Karel
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Comparative Study of Lattice Boltzmann Models for Complex Fractal Geometry
Energies, 2021 A standard model, one of the lattice Boltzmann models for incompressible flow, is broadly applied in mesoscopic fluid with obvious compressible error.
Dong Zhang, Enzhi Wang, Xiaoli Liu
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Engineering Applications of Computational Fluid Mechanics, 2019 The regime of compressible flow generally refers to the super/subsonic case. However, several remarkable cases with low Mach number could not be appropriately described with the incompressible method.
Cong Yuan, Jinchun Song, Minghe Liu
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Analytic solutions of a two-fluid hydrodynamic model
Mathematical Modelling and Analysis, 2021 We investigate a one dimensional flow described with the non-compressible coupled Euler and non-compressible Navier-Stokes equations in the Cartesian coordinate system.
Imre Ferenc Barna, László Mátyás
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A Compressible Formulation of the One-Fluid Model for Two-Phase Flows
FluidsIn this paper, we introduce a compressible formulation for dealing with 2D/3D compressible interfacial flows. It integrates a monolithic solver to achieve robust velocity–pressure coupling, ensuring precision and stability across diverse fluid flow ...
Simon El Ouafa +5 more
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The simulation of the flow through the porous media and diffusible barriers
EPJ Web of Conferences, 2018 Here we work with the RANS equations describing the non-stationary viscous compressible fluid flow. We focus on the numerical simulation of the flow through the porous media, characterized by the loss of momentum. Further we simulate the flow through the
Kyncl Martin, Pelant Jaroslav
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