Haut PDF Mesh adaptation for compressible flows
Mesh adaptation for compressible flows
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An a priori anisotropic Goal-Oriented Error Estimate for Viscous Compressible Flow and Application to Mesh Adaptation
... analysis for anisotropic goal-oriented mesh adaptation for the compressible Navier-Stokes ...the mesh is stretched. For that reason, we proposed to consider an a priori ...
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Anisotropic output-based adaptation with tetrahedral cut cells for compressible flows
... discretization for tetrahedral cut-cells is developed that makes possible robust, anisotropic adaptation on complex ...inviscid flows, this cut-cell discretization is shown to produce similar ...
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Anisotropic Norm-Oriented Mesh Adaptation for Compressible Inviscid Flows
... anisotropic mesh adaptation with norm oriented ...drag. For the lift, we observe that the corrected lift converges at a higher rates that the uncorrected prediction, see Figure 2 (top ...right). ...
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A simple second order cartesian scheme for compressible Euler flows
... accounting for the presence of boundaries is per- formed at the discrete ...[13]) for multiphase flows belongs to this ...developed for compressible flows, see for example [30], [40], ...
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2015 — Finite element model for three-dimensional compressible turbulent flows
... approach for the solution of some multiphysics ...methodology for solving multiphysics ...FEM for solving the compressible Navier-Stokes equations combined with the Spalart-Allmaras ...method ...
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CONVERGENT ERROR-CONTROLLED MESH ADAPTATION
... Surface mesh and velocity iso-values when controlling the sum of the L 1 norm of the in- terpolation error on the density, velocity and pressure (top), the Mach number (middle) and the norm ||W − W h|| L 2 with ...
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Phase Change Simulation for Isothermal Compressible Two-Phase Flows
... γ = C p /C v 2.35 1.43 Table 1. Fluids parameters for the one dimensional piston test. We use here the MT-scheme with different space steps. Figure 1 displays the profiles of z, pressure P and velocity u at ...
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Curved Interface Reconstruction for 2D Compressible Multi-material Flows
... 4. Robustness improvement of DPIR To illustrate this robustness problem let us consider the same test as above on an unstructured mesh (Fig. 5). In some cases the points M i and M i+1 obtained after the first ...
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Isogeometric analysis for compressible flows using a Discontinuous Galerkin method
... obtained for different test-cases, the resolution scheme exhibits a high-order accuracy with quasi-optimal con- vergence rate, and seems to be robust with respect to mesh ...accounting for boundary ...
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Coupling of time integration schemes for compressible unsteady flows
... A one-dimensional temporal adaptive algorithm was proposed by Sanders and Osher [ 85 ], leading to a first-order time accurate method applied to a scalar equation. Later on, the exten- sion of the procedure to ...
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Metrix User Guide. Error Estimates and Mesh Control for Anisotropic Mesh Adaptation
... Supersonic flows involve highly anisotropic physical structures. In the case of a supersonic aircraft, a large number of shock structures are present in the flow that correspond to all Mach cones issued from the ...
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Machine Learning design of Volume of Fluid schemes for compressible flows
... understand for what reason the dynamical system made of the Volume of Fluid-Machine Learning flux coupled with a more traditional Finite Volume bi-material solver is able to get a good control of the number of ...
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Mesh adaptation for the embedded boundary method in CFD
... conformal mesh (e.g. a water-tight and non self-intersecting mesh) of the ...this mesh without manual ...interest for simulating shape-varying geometries like veins or aortic valves [47, 48], ...
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A tensorial-based Mesh Adaptation for a Poisson problem
... multi-fluid flows with a large deviation between the densities ρ1 and ρ2 of each ...equations for incom- pressible flow, a Poisson problem with discontinuous coefficients has to be ...introduced for ...
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Estimates- and Corrector-based Mesh Adaptation
... for each ...the adaptation strategy, completely different flow fields are ...The adaptation on the Mach number reveals strong shear layers at the wing tip that are not present in the norm oriented ...
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Mesh adaptation for k-exact CFD approximations
... 3.1 Higher-order (HO) estimates Main existing HO schemes satisfy the so-called k−exactness property expressing the fact that if the exact solution is a polynomial of order k then the approximation scheme will give the ...
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A Sensitivity Equation Method for Unsteady Compressible Flows: Implementation and Verification
... r. t. δa in log-log scale. 6.1 Steady inviscid flow in a nozzle We consider as first test-case the steady inviscid subsonic flow in a two-dimensional nozzle. The Mach number is set to the value M = 0.15. Note that the ...
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Assessment of time implicit discretizations for the computation of turbulent compressible flows
... property for steady computations but undesirable for time accurate ...systems for each space direction and Runge–Kutta ...inconsequential for steady computations but may be unacceptably high ...
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A low-diffusion self-adaptive flux-vector splitting approach for compressible flows
... 5.5. Test 5: Interaction acoustic wave with a 2-D stationary vortex 256 The last test-case has been insipred from the work of Miczek and co-authors [38]. The computational domain represents a pipe section whose diameter ...
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