Gradient evaluation on non-orthogonal meshes for the application of a plasma torch
A numerical method is proposed to evaluate gradients on non-uniform, non-orthogonal 3D structured meshes of hexahedra, as commonly used by finite volume methods. The method uses isoparametric transforms on tetrahedra to evaluate the gradient on a regular mesh and transform it back to the general mesh. It provides second-order accuracy, even on highly non-orthogonal meshes. Results of stationary 3D numerical simulations of a DC plasma torch, making use of the proposed method, are presented.
Bibliographic Reference: EPFL Internal report LRP 748/03, February 2003. 19pp.
Availability: Available free of charge from: École Polytechnique Fédérale de Lausanne (EPFL), Ecublens, CH-1015 Lausanne Fax +41-21-6934747 Also available online at http://crppwww.epfl.ch/archives/lrp2003.htm
ISBN: ISSN: 0458-5895
Record Number: 200316195 / Last updated on: 2003-05-14
Original language: en
Available languages: en