Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Artificial Dissipation"”.
-
Numerical Solution of the Euler and the Navier-Stokes Equations for a Compressible Flow Problem
… To stabilize the computation, fourth order artificial dissipation is explicitly added to the numerical scheme. Experiments were performed to find the smallest artificial dissipation which gives an accurate numerical solution. The rate of convergence of the solution was significantly …
-
Multi-dimensional Upwind Fluctuation Splitting Scheme with Mesh Adaption for Hypersonic Viscous Flow
… is shown to be the reduced production of artificial dissipation relative to DMFDSFV. The most significant scalar result is for combined advection-diffusion, where the present fluctuation splitting scheme is able to resolve the physical dissipation from the artificial dissipation on a much …
-
Shock capturing with PDE-based artificial viscosity for an adaptive, higher-order discontinuous Galerkin finite element method
… for higher-order, adaptive methods is necessary. Artificial viscosity can be combined with a higher-order discontinuous Galerkin finite element discretization to resolve a shock layer within a single cell. However, when a nonsmooth artificial viscosity model is employed with an otherwise …
-
A finite element, Navier-Stokes study of the confined, laminar flow over a downstream facing step
… schemes that rely upon an infusion of artificial dissipation to enhance their numerical stability. The computational algorithm was also used to ascertain the cause of the noticeable lack of development and skewness that characterized the experimental data of Denham and Patrick both at …
-
Time-stable high-order finite difference methods for overset grids
… overset grids are stabilized by adding numerical dissipation without any underlying theoretical analysis, impacting the accuracy and the conservation properties of the original method. In this work we discuss the construction of a provably time-stable and conservative method for solving hyperbolic …
-
High-Order Finite-Difference Schemes and Their Application to Computational Acoustics
… high-order schemes are favored for their low dissipation and low dispersion relative to the low-order schemes. The primary obstacle to the the development of explicit high-order finite-difference schemes is the construction of boundary closures which simultaneously maintain the formal order of …
-
Experimental and Numerical Investigations of the Effects of Incident Turbulence on the Flow Over a Surface-Mounted Prism
… with experiments by controlling the level of artificial dissipation. This led us to recommend a new procedure, we denote by C6CUD5 scheme, that combines a compact sixth-order scheme with the CUD-II-5 scheme for large eddy simulation of complex flows. The simulation results, including flow …
-
Large eddy simulation of subsonic mixing layers
… very fast and supplies enough but not excessive artificial dissipation. Though slower than MacCormack scheme, the pseudo-spectral method has its advantage: high resolution of the high-wavenumber range when adequate de-aliasing scheme is used. When efficient fast Fourier transform routines are …
-
An anisotropic adaptive method for the solution of 3-D inviscid and viscous compressible flows
… that the flow solver required lower amounts of artificial dissipation for solution on the final adapted grids. The current work should convincingly pave the way for its logical extension to unstructured grids, taking further advantage of refinement, coarsening and edge-swapping operations. It is …