h-adaptivity and "honest" GFEM for advection-dominated transport

Asif Usmani, David Mayne, Martin Crapper

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A standard two-dimensional Galerkin finite-element method (GFEM) code for coupled Navier-Stokes and energy equations is used with h -adaptive meshing based on a posteriori error estimation using the superconvergent patch recovery technique for solving a range of advection-dominated transport problems. It is demonstrated that such a method provides a highly effective, simple, and efficient way of dealing with the perennial problems in numerical modeling of advection-dominated transport, such as oscillations or wiggles with central difference-type discretizations (such as GFEM) and numerical ("false") diffusion when wiggle-suppressant schemes are used. Additionally, the auto-adaptive finite-element method provides a powerful means of achieving optimal solutions without having to predefine a mesh, which may be either inadequate or too expensive. A number of benchmark problems are presented as application examples for this method before solving a problem of natural convection in an air-filled cavity with various orientations, for which experimental results are available.
Original languageEnglish
Pages (from-to)339-359
JournalNumerical Heat Transfer, Part B: Fundamentals
Volume41
Issue number3-4
DOIs
Publication statusPublished - 2002

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