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Showing 1 to 20 of 361 for “"Finite volume"”.
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Finite-Volume Optimal Large -Eddy Simulation
Finally, the dynamic optimal finite-volume LES model is applied to more a more complex flow, the temporally-growing shear layer. The results obtained with dynamic optimal finite-volume LES models are comparable with the DNS results of Rogers & Moser (1994), at a fraction of the cost. One expects …
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Computational stress analysis using finite volume methods
There is a growing interest in applying finite volume methods to model solid mechanics problems and multi-physics phenomena. During the last ten years an increasing amount of activity has taken place in this area. Unlike the finite element formulation, which generally involves volume integrals, the …
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Unstructured finite volume algorithms for compressible multiphase flow
… flow within an unstructured, collocated, finite volume solver in the presence of non-orthogonality and compressibility in order to extend the range of problems which can be modelled with the University's in-house CFD code: PHYSICA. A new non-orthogonality diffusion correction relaxation …
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Black oil simulation utilizing a central finite volume scheme
… validates the use of a central high resolution finite volume scheme developed by Kurganov and Tadmor (KT) to the black-oil model problem. The KT scheme is desirable because of its relative ease of implementation and its ability to generate high resolution solutions at low computational costs. In …
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Finite volume schemes for hyperbolic-parabolic systems : error estimates
Finite-volume schemes on unstructured grids are the most frequently used <br>to approximate solutions of systems of hyperbolic balance laws in multi-space dimension. <br>The convergence analysis for the scalar case is well developed, even though <br>not complete up to now. In contrast, very few is …
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Finite volume modelling of low speed structural impact problems
… in this thesis on the common theme of applying finite volume methods to simulate structural impact problems. The first investigation is the application of the Eulerian Finite Volume Method (EFVM) to simulate the low-speed impact of ductile materials. Simulation results are validated against …
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Complex fluid dynamical computations via the Finite Volume Method
… model. Our Numerical approach is based on finite volume method, based on the Johnson-Segalman constitutive model and implemented on the OpenFOAM® platform. The Johnson-Segalman model also easily reduces to the Oldroyd-B model under certain conditions of the material parameters. Since …
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A Cartesian finite-volume method for the Euler equations
… The Euler equations are solved using a finite-volume method with a non-body-fitted Cartesian grid. A new numerical formulation for complicated body geometries is developed in conjunction with implicit flux-splitting schemes. A variety of numerical computations have been performed to …
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Finite volume analysis and optimisation of a high pressure homogeniser
… methane production and also reduce digester volume. In this case, the waste water sludge with microbes was implemented with a mixture of dry maize silage to produce methane by means of anaerobic conditions. The homogeniser is used to break up tough microbes in secondary waste water sludge to …
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Unstructured mesh - finite volume algorithms for swirling, turbulent, reacting flows
… this thesis develops techniques, employing the Finite Volume discretisation method, which allow the numerical simulation of three dimensional heat transfer and fluid flow problems using unstructured meshes. The method solves and stores all variables at the element centres which lowers storage …
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Efficient finite-volume schemes for magnetohydrodynamic simulations in solar physics
We present efficient finite-volume schemes for solving the equations of (compressible) magnetohydrodynamics (MHD) in one, two, and three spatial dimensions. We introduce a new approximate Riemann solver for the ideal gas MHD equations (MHD-HLLEM) that outperforms all other solvers considered. We …
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A generalized unstructured finite volume solver with application to turbomachinery
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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Supersonic conical flow computations using a rectangular finite volume method
… in spherical coordinates using a rectangular finite volume approach. The only mapping done is the mapping of the spherical solution surface to that of a flat plane using a stereographic projection. The mapped plane is then discretised into rectangular finite volumes. The rectangular volumes …
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Salinity Transport in a Finite-Volume Sigma-Layer Three-Dimensional Model
The objective of this study was to develop a 3-D model for The Pontchartrain Estuary that was capable of long-term mass conservative simulation of salinities. This was accomplished in a multi-stage approach involving: a physical model of salinity exchange through a pass; a 3-D FVCOM model of the …
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Covolume-Upwind Finite Volume Approximations For Linear Elliptic Partial Differential Equations
<p>In this dissertation we study covolume-upwind finite volume methods on rectilinear grids for solving second-order linear elliptic partial differential equations with mixed boundary conditions. This class of problems has intensive applications in various fields of science and engineering, e.g., …
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Development of a High-Order Finite Volume Code for Turbomachinery Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Code Verification and Numerical Accuracy Assessment for Finite Volume CFD Codes
… code verification study of an unstructured finite volume Computational Fluid Dynamics (CFD) code is performed. The Method of Manufactured Solutions is used to generate exact solutions for the Euler and Navier-Stokes equations to verify the correctness of the code through order of accuracy …
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Extension of the finite volume method to laminar and turbulent flow
… transonic, viscous flow in ducts. The finite volume, time marching formulation is used to obtain steady flow solutions of the Reynolds-averaged form of the Navier Stokes equations. The entire calculation is performed in the physical domain. The method is currently limited to the …
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