A New Framework for the Harmonic Balance Method in OpenFOAM

The Harmonic Balance Method is one of the most commonly employed Reduced Order Models for turbomachinery calculations, since it leverages the signal sparsity in the frequency domain to cast the transient equations into a coupled set of steady-state ones. The present work aims at detailing the develo...

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Main Authors: Stefano Oliani, Nicola Casari, Mauro Carnevale
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Series:Machines
Subjects:
Online Access:https://www.mdpi.com/2075-1702/10/4/279
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author Stefano Oliani
Nicola Casari
Mauro Carnevale
author_facet Stefano Oliani
Nicola Casari
Mauro Carnevale
author_sort Stefano Oliani
collection DOAJ
description The Harmonic Balance Method is one of the most commonly employed Reduced Order Models for turbomachinery calculations, since it leverages the signal sparsity in the frequency domain to cast the transient equations into a coupled set of steady-state ones. The present work aims at detailing the development and validation of a new framework for the application of the Harmonic Balance Method in the open-source software OpenFOAM. The paper is conceptually divided into building blocks for the implementation of the code. For each of these, theoretical notions and coding strategies are given, and an ad hoc validation test case is presented. This structure has been chosen with the aim of easing the reader in the understanding and implementation of such a method in a generic fluid dynamics solver. In a fully open source philosophy, the library files are freely accessible in the authors’ repository (link provided below in the text).
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spelling doaj.art-13dbf44b42d5405f8284fd751743e54e2023-11-30T21:26:18ZengMDPI AGMachines2075-17022022-04-0110427910.3390/machines10040279A New Framework for the Harmonic Balance Method in OpenFOAMStefano Oliani0Nicola Casari1Mauro Carnevale2Department of Engineering, University of Ferrara, Via Saragat 1, 44122 Ferrara, ItalyDepartment of Engineering, University of Ferrara, Via Saragat 1, 44122 Ferrara, ItalyDepartment of Mechanical Engineering, University of Bath, Claverton Down, Bath BA2 7AY, UKThe Harmonic Balance Method is one of the most commonly employed Reduced Order Models for turbomachinery calculations, since it leverages the signal sparsity in the frequency domain to cast the transient equations into a coupled set of steady-state ones. The present work aims at detailing the development and validation of a new framework for the application of the Harmonic Balance Method in the open-source software OpenFOAM. The paper is conceptually divided into building blocks for the implementation of the code. For each of these, theoretical notions and coding strategies are given, and an ad hoc validation test case is presented. This structure has been chosen with the aim of easing the reader in the understanding and implementation of such a method in a generic fluid dynamics solver. In a fully open source philosophy, the library files are freely accessible in the authors’ repository (link provided below in the text).https://www.mdpi.com/2075-1702/10/4/279OpenFOAMharmonic balancespectral methodsturbomachinerycompressible flowsfourier series
spellingShingle Stefano Oliani
Nicola Casari
Mauro Carnevale
A New Framework for the Harmonic Balance Method in OpenFOAM
Machines
OpenFOAM
harmonic balance
spectral methods
turbomachinery
compressible flows
fourier series
title A New Framework for the Harmonic Balance Method in OpenFOAM
title_full A New Framework for the Harmonic Balance Method in OpenFOAM
title_fullStr A New Framework for the Harmonic Balance Method in OpenFOAM
title_full_unstemmed A New Framework for the Harmonic Balance Method in OpenFOAM
title_short A New Framework for the Harmonic Balance Method in OpenFOAM
title_sort new framework for the harmonic balance method in openfoam
topic OpenFOAM
harmonic balance
spectral methods
turbomachinery
compressible flows
fourier series
url https://www.mdpi.com/2075-1702/10/4/279
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