Application of Dirichlet′s Principle in A New Panel Method for Surface and Tip Flows of Lifting Bodies〔含 討論〕
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- Georgiev Dian J.
- Yokohama National University
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- Ikehata Mitsuhisa
- Yokohama National University
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- Kai Hisashi
- Yokohama National University
書誌事項
- タイトル別名
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- Application of Dirichlet's Principle in A New Panel Method for Surface and Tip Flows of Lifting Bodies
- Application of Dirichlet s Principle in
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説明
At present time the computational models based on solution of perturbation potential flow are widely used to solve the Neumann's problem on the surface of a lifting body. Employing surface paneling discretization of the potential according to the curvature of body and wake surfaces, Fredholm's second kind integral equation is solved numerically, regarding the dipole strength of potential.<BR>In the present variational surface panel method a decomposition of the boundary surface is carried out for analytical integration on body and wake panels by polyhedral subpaneling. Using Taylor's series expansion of the dipole strength in the vicinity of each analysed point and employing least squares minimization of its derivatives, the relevant minimal perturbation velocity field on the body surface is obtained. By means of the corresponding streamlines an optimisation of the body boundary surface discretization is done through new asymmetrical streamlines adapted repaneling (SAR). Numerical calculations with wings and propellers are performed in order to prove the agreement of the estimated circulation and pressure distribution, as well as induced downstream flow characteristics with their experimental data.<BR>Special attention is paid to obtain a reliable estimation of the tip flow characteristics of wings and propellers.
収録刊行物
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- 日本造船学会論文集
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日本造船学会論文集 1997 (182), 81-95, 1997
社団法人 日本船舶海洋工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679073066112
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- NII論文ID
- 110003885508
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- NII書誌ID
- AN00194094
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- ISSN
- 18842070
- 05148499
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- NDL書誌ID
- 4402097
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDLサーチ
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- NDLデジコレ(旧NII-ELS)
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