Orthogonal Decomposition Method: Orthogonal Decomposition Method with Applications to Swirling Fluid Dynamics - Couverture souple

Bistrian, Diana Alina

 
9783846588017: Orthogonal Decomposition Method: Orthogonal Decomposition Method with Applications to Swirling Fluid Dynamics
Couverture souple
ISBN 10 : 3846588016 ISBN 13 : 9783846588017
Editeur : LAP LAMBERT Academic Publishing, 2012

Synopsis

The hydrodynamic instability arising under the form of a precession flow, named the vortex rope, creates high-pressure unsteady fluctuations on the walls of the draft tube of a Francis hydropower turbine, leading to a poor performance of the turbine including fatigue damage. Modeling of the phenomena and the numerical investigation of the hydrodynamic instability of this swirling system were tasks that have been assessed in this book. As an alternative to classical methods, the present book proposes a new approach of the analysis of the swirling flows based on a recently mathematical method of spectral collocation with orthogonal decomposition. The mathematical model presented in this book can recover the information in the prediction of the turbine characteristics without computing the full three-dimensional unsteady flow. As a result, this book provides valuable tools for assessing the turbine behavior at off-design operating regimes in the early stages of runner design. Mathematical instruments offered in this book give a transferable knowledge in approaching interdisciplinary problems that occur in modern science, which can be applied to a number of different disciplines.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

The hydrodynamic instability arising under the form of a precession flow, named the vortex rope, creates high-pressure unsteady fluctuations on the walls of the draft tube of a Francis hydropower turbine, leading to a poor performance of the turbine including fatigue damage. Modeling of the phenomena and the numerical investigation of the hydrodynamic instability of this swirling system were tasks that have been assessed in this book. As an alternative to classical methods, the present book proposes a new approach of the analysis of the swirling flows based on a recently mathematical method of spectral collocation with orthogonal decomposition. The mathematical model presented in this book can recover the information in the prediction of the turbine characteristics without computing the full three-dimensional unsteady flow. As a result, this book provides valuable tools for assessing the turbine behavior at off-design operating regimes in the early stages of runner design. Mathematical instruments offered in this book give a transferable knowledge in approaching interdisciplinary problems that occur in modern science, which can be applied to a number of different disciplines.

Biographie de l'auteur

Studied Mathematics and Computer Science at the West University of Timisoara, Romania. She is also B.Sc. in Computers-IT and Ph.D in Computers and Information Technology at “Politehnica” University of Timisoara. She is conducting her research in computational mathematics and numerical methods for swirling fluid dynamics.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2012
Langue
anglais
ISBN 10 
3846588016
ISBN 13 
9783846588017
Reliure
Broché
Nombre de pages
160
Coordonnées du fabricant
non disponible
Personne responsable
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