id 
ecaade2020_258 
authors 
Zhang, Ran, Waibel, Christoph and Wortmann, Thomas 
year 
2020 
title 
Aerodynamic Shape Optimization for HighRise Conceptual Design  Integrating and validating parametric design, (fast) fluid dynamics, structural analysis and optimization 
source 
Werner, L and Koering, D (eds.), Anthropologic: Architecture and Fabrication in the cognitive age  Proceedings of the 38th eCAADe Conference  Volume 1, TU Berlin, Berlin, Germany, 1618 September 2020, pp. 3745 
summary 
Using an integrated workflow with parametric design, Computational Fluid Dynamic (CFD) and Fast Fluid Dynamic (FFD) simulations, structural analysis and optimization, this paper evaluates the relative suitability of CFD and FFD simulations for Aerodynamic Shape Optimization (ASO). Specifically, it applies RBFOpt, a modelbased optimization algorithm, to the ASO of a supertall highrise. The paper evaluates the accuracy of the CFD and FDD simulations relative to a slower, more exact CFD simulation, and the performance of the modelbased optimization algorithm relative to CMAES, an evolutionary algorithm. We conclude that FFD is useful for relative comparisons, such as for optimization, but less accurate than CFD in terms of absolute quantities. Although results tend to be similar, CMAES performs less well than RBFOpt for both large and small numbers of simulations, and for both CFD and FFD. RBFOpt with FFD emerges as the most suitable method for conceptual design, as it is much faster and only slightly less effective than RBFOpt with CFD. 
keywords 
Aerodynamic Shape Optimization; Computational Fluid Dynamics (CFD); Fast Fluid Dynamics (FFD); Modelbased Optimization; Highrise Conceptual Design 
series 
eCAADe 
email 
thomas.wortmann@xjtlu.edu.cn 
full text 
file.pdf (1,973,614 bytes) 
references 
Contenttype: text/plain

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last changed 
2020/09/09 09:50 
