Hydrodynamic Optimization of Ship Hull Form Using Finite Element Method and Variable Fidelity Models

发布日期：2012-08-05

报告题目

时间

2012-08-14 15:00

地点

上海交大闵行校区木兰船建大楼A1008 会议室

报告人

杨驰教授, George Mason University, USA

 

主   办:
联系人:

 

报告内容简介：
This talk presents an integrated hydrodynamic optimization tool and the application of the tool to the design of a
modern container ship. Instead of using very complex and computationally expensive CFD solvers with standard
optimization methods, the present tool adopts the variable fidelity method that uses lower-fidelity models and a
scaling function to approximate the higher-fidelity models to reduce computational cost. An Euler based
finite-element flow solver and a linear potential theory based flow solver are used as high-fidelity model and
lower-fidelity model, respectively. To update the domain grid automatically during the optimization, the radial
basis function interpolation method is adopted. The present variable fidelity method is globally convergent to the
solution of the original and high-fidelity problem. The radial basis function interpolations are effective in
deforming unstructured domain mesh according to updated hull form and keeping the quality of mesh after
deformation. For purposes of illustration, the present hydrodynamic optimization tool is used to determine the
optimal hull form of a modern container ship by minimizing the wave resistance for a given design speed with a
displacement constraint. The future outlook of hydrodynamic optimization will also be addressed.
 

报告人简介：
Dr. Chi Yang is currently a Professor in Computational Fluid Dynamics at George Mason University. She is also a
Visiting Chair Professor (长江学者讲座教授)at Shanghai Jiao Tong University. She received her Ph.D. degree in
Naval Architecture and Ocean Engineering at Shanghai Jiao Tong University in 1988. Dr. Yang’s main research
interest lies in the area of Computational Fluid Dynamics (CFD) and its application to marine hydrodynamics. She
has been working in the field of computational marine hydrodynamics for more than twenty years and has over
170 scientific publications on a wide range of topics, with emphasis on efficient field solvers based on
unstructured grids and finite element method for compressible and incompressible flows; field solvers based on
boundary element method for free surface flows; fluid-structure interaction; shape optimization using CFD tools.
She is currently serving as a member on the editorial boards two international journals (Applied Ocean Research;
Journal of Hydrodynamics), and as a Technical Committee Member in the International Society of Offshore and
Polar Engineers. She has given numerous invited lectures at international conferences, universities, research
institutes and private companies worldwide. Dr. Yang is regarded as a worldwide leading researcher and educator
in the field of computational marine hydrodynamics.
欢迎大家参加！
联系人：万德成 教授 Email: dcwan@sjtu.edu.cn