Title: Verification, validation and error estimation in CFD for compressible flows

Authors: Jacques Peter, Marc Lazareff, Vincent Couaillier

Addresses: ONERA, BP 72 – 29 avenue de la Division Leclerc, 92322 Chatillon Cedex, France. ' ONERA, BP 72 – 29 avenue de la Division Leclerc, 92322 Chatillon Cedex, France. ' ONERA, BP 72 – 29 avenue de la Division Leclerc, 92322 Chatillon Cedex, France

Abstract: As the leader of ONERA internal project ARF PRECOTION (PREcision des COdes de simulaTION) and participant to the EU project NODESIM-CFD (NOn-DEterministic SIMulation for CFD-based design methodologies) (Hirsch, 2007), ONERA/DSNA has gained experience on verification and validation with CFD codes. The first technical section of this article is devoted to a reminder about verification and validation. The three next sections present practical estimations of various errors and uncertainties (in the technical sense of upper bounds of the absolute values of an error term) appearing in verification and validation processes. Section 3 deals with the estimation of discretisation errors. Section 4 presents several methods for the propagation of uncertain inputs. Section 5 deals with the errors due to numerical parameters and lack of convergence.

Keywords: verification; validation; error estimation; CFD; discretisation errors; uncertainty quantification; computational fluid dynamics; simulation.

DOI: 10.1504/IJESMS.2010.031873

International Journal of Engineering Systems Modelling and Simulation, 2010 Vol.2 No.1/2, pp.75 - 86

Published online: 27 Feb 2010 *

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