The aim of this paper is shape optimization of a cryogenic flow past an isolated hydrofoil in order to reduce the cavitation. The numerical simulation of cavitating flows has been performed by way of the commercially available code Fluent (release 6.3), implementing a cavitation model by using external routines. The model is based on a simplified Rayleigh-Plesset equation, and takes into account both nucleation and thermal effects. This study has been divided in two parts. Firstly the cavitation model has been validated by comparison with experimental data, in particular, water cavitation on a NACA0015 airfoil and hydrogen cavitating flow over an external profile. Secondly, Fluent has been coupled with a multi-objective genetic algorithm (MOGA). Genetic algorithms have proved their interest with respect to gradient-based methods because of their high flexibility, and also because of their ability to find global optima of multi-modal problem. The representation of the design space has been previously investigated through a Design of Experiment (DOE) procedure. A shape optimization of an hydrofoil has been computed in order to minimize the vapor volume in different operating conditions.
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ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences
August 10–14, 2008
Jacksonville, Florida, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4840-1
PROCEEDINGS PAPER
Shape Optimization for Cryogenic Cavitating Flows Past an Isolated Hydrofoil Available to Purchase
Maria Grazia De Giorgi,
Maria Grazia De Giorgi
University of Salento, Lecce, Italy
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Pietro Marco Congedo,
Pietro Marco Congedo
University of Salento, Lecce, Italy
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Maria Giovanna Rodio,
Maria Giovanna Rodio
University of Salento, Lecce, Italy
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Antonio Ficarella
Antonio Ficarella
University of Salento, Lecce, Italy
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Maria Grazia De Giorgi
University of Salento, Lecce, Italy
Pietro Marco Congedo
University of Salento, Lecce, Italy
Maria Giovanna Rodio
University of Salento, Lecce, Italy
Antonio Ficarella
University of Salento, Lecce, Italy
Paper No:
FEDSM2008-55119, pp. 75-85; 11 pages
Published Online:
June 30, 2009
Citation
De Giorgi, MG, Congedo, PM, Rodio, MG, & Ficarella, A. "Shape Optimization for Cryogenic Cavitating Flows Past an Isolated Hydrofoil." Proceedings of the ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. Volume 1: Symposia, Parts A and B. Jacksonville, Florida, USA. August 10–14, 2008. pp. 75-85. ASME. https://doi.org/10.1115/FEDSM2008-55119
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