Title:	Flow-Field Prediction in Periodic Domains Using a Convolution Neural Network with Hypernetwork Parametrization
Authors:	Bublík, Ondřej Heidler, Václav Pecka, Aleš Vimmr, Jan
Citation:	BUBLÍK, O. HEIDLER, V. PECKA, A. VIMMR, J. Flow-Field Prediction in Periodic Domains Using a Convolution Neural Network with Hypernetwork Parametrization. International Journal of Applied Mechanics, 2023, roč. 15, č. 2, s. 1-20. ISSN: 1758-8251
Issue Date:	2023
Publisher:	World Scientific
Document type:	článek article
URI:	2-s2.0-85147495139 http://hdl.handle.net/11025/52987
ISSN:	1758-8251
Keywords in different language:	blade cascade;compressible fluid flow;convolutional neural network;hypernetwork;periodic boundary condition
Abstract in different language:	This paper deals with flow field prediction in a blade cascade using the convolution neural network. The convolutional neural network (CNN) predicts density, pressure and velocity fields based on the given geometry. The blade cascade is modeled as a single interblade channel with periodic boundary conditions. In this paper, an algorithm that enforces periodic boundary conditions onto the CNN is presented. The main target of this study is to parametrize the CNN model depending on the Reynolds number. A new parametrization approach based on a so-called hypernetwork is employed for this purpose. The idea of this approach is that when the Reynolds number is modified, the hypernetwork modifies the weights of the CNN in such a way that it produces flow fields corresponding to that particular Reynolds number. The concept of the hypernetwork-based parametrization is tested on the problem of a compressible fluid flow through a blade cascade with variable blade profiles and Reynolds numbers.
Rights:	Plný text je přístupný v rámci univerzity přihlášeným uživatelům © World Scientific Publishing Europe Ltd.
Appears in Collections:	Články / Articles (NTIS) Články / Articles (KME) OBD

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