NDLI: Shape Optimization for Cryogenic Cavitating Flows Past an Isolated Hydrofoil

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Giorgi, Maria Grazia De Congedo, Pietro Marco Rodio, Maria Giovanna Ficarella, Antonio
Copyright Year	2008
Abstract	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.
Sponsorship	Fluids Engineering Division
Starting Page	75
Ending Page	85
Page Count	11
File Format	PDF
ISBN	9780791848401
DOI	10.1115/FEDSM2008-55119
e-ISBN	0791838323
Volume Number	Volume 1: Symposia, Parts A and B
Conference Proceedings	ASME 2008 Fluids Engineering Division Summer Meeting collocated with the Heat Transfer, Energy Sustainability, and 3rd Energy Nanotechnology Conferences
Language	English
Publisher Date	2008-08-10
Publisher Place	Jacksonville, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Water Computer simulation Hydrogen Shape optimization Vapors Airfoils Flow (dynamics) Hydrofoil Cavitation Genetic algorithms Nucleation (physics) Design Temperature effects
Content Type	Text
Resource Type	Article

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