NDLI: Simulation of Fluid Flow Using Reduced-Order Modeling by POD Approach Applied to Academic Cases

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Pomarede, Marie Hamdouni, Aziz Liberge, Erwan Longatte, Elisabeth Sigrist, Jean-Franc¸ois
Copyright Year	2010
Abstract	Tube bundles in steam boilers of nuclear power plants and nuclear on-board stokehold are known to be exposed to high levels of vibrations. This coupled fluid-structure problem is very complex to numerically set up, because of its three-dimensional characteristics and because of the large number of degrees of freedom involved. A complete numerical resolution of such a problem is currently not viable, all the more so as a precise understanding of this system behaviour needs a large amount of data, obtained by very expensive calculations. We propose here to apply the now classical reduced order method called Proper Orthogonal Decomposition to this case. This choice could lead to reduced calculation times and allow parametrical investigations thanks to a low data quantity. But, it implies several challenges inherent to the fluid-structure characteristic of the problem. Previous works on the dynamic analysis of steam generator tube bundles already provided interesting results in the case of non flowing fluid — i.e. quiescent fluid [J.F. Sigrist, D. Broc; Dynamic Analysis of a Steam Generator Tube Bundle with Fluid-Structure Interaction; Pressure Vessel and Piping, July 27–31, 2008, Chicago]. A first step on the implementation of POD in academic cases (one-dimensional equations, 2D-single tube configuration) is presented. Future work will consist in working on the tube bundle configuration, first in the fixed case and then with structure motion allowed. Present study shows the efficiency of the reduced model to reproduce similar problems from a unique data set for various configurations as well as the efficiency of the reduction for simple cases.
Sponsorship	Pressure Vessels and Piping Division
Starting Page	43
Ending Page	49
Page Count	7
File Format	PDF
ISBN	9780791849231
DOI	10.1115/PVP2010-25275
e-ISBN	9780791838785
Volume Number	ASME 2010 Pressure Vessels and Piping Conference: Volume 4
Conference Proceedings	ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
Language	English
Publisher Date	2010-07-18
Publisher Place	Bellevue, Washington, USA
Access Restriction	Subscribed
Subject Keyword	Degrees of freedom Vibration Fluid dynamics Dynamic analysis Boilers Fluid structure interaction Modeling Fluids Simulation Pressure vessels Resolution (optics) Nuclear power stations Pipes Principal component analysis
Content Type	Text
Resource Type	Article

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