An artificial neural network approach to bifurcating phenomena in computational fluid dynamics
An artificial neural network approach to bifurcating phenomena in computational fluid dynamics
复制标题
计算流体动力学中分叉现象的人工神经网络方法
DOI:
10.1016/j.compfluid.2023.105813
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发表时间:
2021
期刊:
影响因子:
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通讯作者:
J. Hesthaven
中科院分区:
文献类型:
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作者:
F. Pichi;F. Ballarin;G. Rozza;J. Hesthaven
This work deals with the investigation of bifurcating fluid phenomena using a reduced order modelling setting aided by artificial neural networks. We discuss the POD-NN approach dealing with non-smooth solutions set of nonlinear parametrized PDEs. Thus, we study the Navier–Stokes equations describing: (i) the Coanda effect in a channel, and (ii) the lid driven triangular cavity flow, in a physical/geometrical multi-parametrized setting, considering the effects of the domain’s configuration on the position of the bifurcation points. Finally, we propose a reduced manifold-based bifurcation diagram for a non-intrusive recovery of the critical points evolution. Exploiting such detection tool, we are able to efficiently obtain information about the pattern flow behaviour, from symmetry breaking profiles to attaching/spreading vortices, even in the advection-dominated regime.
DOI:
10.1553/etna_vol56s52
发表时间:
2021
期刊:
ETNA - Electronic Transactions on Numerical Analysis
影响因子:
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作者:
Hess, Martin W.;Quaini, Annalisa;Rozza, Gianluigi
通讯作者:
Rozza, Gianluigi