Uncertainty quantification applied to the performance analysis of a conical diffuser
Sauret, Emilie, Persky, Rodney, Chassaing, Jean-Camille, & Lucor, Didier (2014) Uncertainty quantification applied to the performance analysis of a conical diffuser. In 19th Australasian Fluid Mechanics Conference, 8-11 December 2014, RMIT University, Melbourne, Australia.
This paper offers an uncertainty quantification (UQ) study applied to the performance analysis of the ERCOFTAC conical diffuser. A deterministic CFD solver is coupled with a non-statistical generalised Polynomial Chaos(gPC)representation based on a pseudo-spectral projection method. Such approach has the advantage to not require any modification of the CFD code for the propagation of random disturbances in the aerodynamic field. The stochactic results highlihgt the importance of the inlet velocity uncertainties on the pressure recovery both alone and when coupled with a second uncertain variable. From a theoretical point of view, we investigate the possibility to build our gPC representation on arbitray grid, thus increasing the flexibility of the stochastic framework.
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|Item Type:||Conference Paper|
|Keywords:||uncertainty quantification, CFD, conical diffuser|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Numerical Modelling and Mechanical Characterisation (091307)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > INTERDISCIPLINARY ENGINEERING (091500) > Computational Fluid Dynamics (091501)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > INTERDISCIPLINARY ENGINEERING (091500) > Interdisciplinary Engineering not elsewhere classified (091599)
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2014 [please consult the authors]|
|Deposited On:||22 Dec 2014 02:27|
|Last Modified:||14 Jan 2015 11:21|
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