WIT Press


H-adaptive Boundary Element Schemes For Free Surface Flow Problems

Price

Free (open access)

Paper DOI

10.2495/MB930231

Volume

6

Pages

13

Published

1993

Size

745 kb

Author(s)

A. Naji, D. Ouazar & L.C. Wrobel

Abstract

h-adaptive boundary element schemes for free surface flow problems A. Naji", D. Ouazar", L.C. Wrobel^ % Universite Mohammed V, Ecole Mohammadia d'Ingenieurs, LASH, Laboratoire Associe au CNCPRST, Rabat, Morroco ** Wessex Institute of Technology, University of Portsmouth, Southampton, England ABSTRACT An analysis of free boundary value problems for the steady, irrotational, plane flow of an inviscid, incompressible fluid was performed using an h-adaptive bound- ary element method. The error estimator and indicator used in the adaptive scheme are based on computation of the residual function. Two approaches for computing predicted errors were used: Gauss quadrature [1] and Rank's scheme [2], with errors defined either in the L* or H* norms. Adjustment of the free sur- face has been made using iterative numerical procedures [3, 4]. Numerical results for two different cases: a sluice gate flow and a torrential flow, are presented at the end of the paper. INTRODUCTION The d

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