Shock Capturing Using Flux-corrected Transport Algorithms with Adaptive Gridding PDF Download

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Shock Capturing Using Flux-corrected Transport Algorithms with Adaptive Gridding

Shock Capturing Using Flux-corrected Transport Algorithms with Adaptive Gridding PDF Author:
Publisher:
ISBN:
Category : Algorithms
Languages : en
Pages : 48

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Book Description
A numerical technique has been developed for capturing complex, nonsteady shock structures in multidimensions. The technique relies on moving the computational mesh with the shock wave so that the features of principal interest appear approximately stationary. The method has been implemented using coordinate-split Flux-Corrected Transport (FCT) algorithms which allow the mesh to evolve arbitrarily with respect to the fluid in each coordinate. The grid may thus be optimized in response to the needs of a given problem. Synchronizing the grid and fluid motions permits significant reduction of numerical transients and eliminates numerical diffusion. Shocks develop naturally, with no fitting. The method is illustrated by calculating complex, two-dimensional Mach reflection phenomena associated with airblasts and shock diffraction on wedges. The numerical results are in good agreement with available experimental data. (Author).