Imperial College London
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DrMichaelBluck

Faculty of Engineering, Department of Mechanical Engineering

Reader in Nuclear Engineering
 
 
 
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Contact

 

+44 (0)20 7594 7055m.bluck

 
 
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Location

 

658City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Duan:2020,
author = {Duan, Y and Ahn, JS and Eaton, MD and Bluck, MJ},
pages = {799--812},
title = {QUANTIFICATION OF UNCERTAINTIES IN A SAS-SST SIMULATION CAUSED BY THE UNKNOWN HIGH-WAVE NUMBER DAMPING FACTOR USING SURROGATE MODELLING},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - This paper aims to quantify the uncertainty in the SAS-SST simulation of a prism bluff-body flow due to varying the higher-wave number damping factor (Cs). Instead of running the uncertainty quantification on the CFD simulation directly, a surrogate modelling approach is adopted. The mesh sensitivity is first studied and the numerical error is approximated accordingly. The Kriging modelling method is used to create surrogate models for quantities of interest. The cross-validated Kriging models are constructed based on the CFD predictions. The stochastic tests are performed using the Kriging models, in order to obtain the mean and variance of the CFD prediction due to Cs varying uniformly in the range [0, 1]. In this study, the prediction of flow statistics near the prism block is subject to larger variance due to the varying Cs. The influence of the Cs rapidly decays as the location moves downstream of the prism block.
AU  - Duan,Y
AU  - Ahn,JS
AU  - Eaton,MD
AU  - Bluck,MJ
EP  - 812
PY  - 2020///
SP  - 799
TI  - QUANTIFICATION OF UNCERTAINTIES IN A SAS-SST SIMULATION CAUSED BY THE UNKNOWN HIGH-WAVE NUMBER DAMPING FACTOR USING SURROGATE MODELLING
ER  -
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