An integrated framework for the reliability and validity assessment of numerical wind engineering simulations
Document typeConference report
Rights accessOpen Access
Towards complex architecture and light-weight structures, conventional wind load estimation techniques fail. Hence, Computational Wind Engineering (CWE) plays a crucial role. CWE can be a very helpful tool in all design stages from schematic to detailed design stage. With the current advances in CWE, numerical wind tunnel simulations has a great potential towards improving the structural design quality through better understanding of the wind loads on structures. However, the quality of simulations is still questionable. Despite the increasing attention given to the quantiﬁcation of error and uncertainty in CFD, the techniques that have been developed for general ﬂuid engineering problems to assess the quality of CFD simulations are still marginally used in CWE (Jrg Franke, 2010). This paper is part of a project aiming at deﬁning a framework to assess the predictive capability of wind load computation using CWE with error estimation. The framework consists of three main work packages: Code Veriﬁcation, Solution Veriﬁcation, and Validation. Overall, the generic deﬁnition of the framework is stepwise exempliﬁed with the open-source code KRATOSMultiphysics. In this paper, Code Veriﬁcation is the main concern. The Method of Manufactured solutions is used to verify the Variational Multiscale (VMS) element in KratosCFD incompressible Navier-Stokes solver. TaylorGreen vortex is the basis for the veriﬁcation test. The Taylor-Green vortex is a wellstudied test problem for large eddy simulation (LES) subgrid scale models. Moreover, Taylor-Green vortex is modiﬁed to have more extensive testing for the code. Finally, a second order convergence rate is observed which veriﬁes the tested code functionality, then numerical errors are to be quantiﬁed.
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