요트세일의 풍동시험을 위한 공력 계측시스템 구축과 모형세일의 공력 계측
A Construction of Aerodynamic Force Measurement System for Wind Tunnel Test of Yacht Sail and Aerodynamic Forces Measurement of Model Sail
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초록
In order to estimate a yacht sail performance, measuring system of aerodynamic forces acting on the yacht sail is constructed and experiments of flexible model sail are carried out at the medium-size subsonic wind tunnel of Chungnam National University. Experimental results for a flexible sail are compared with experimental and numerical results of fixed shape sail. In case of a fixed shape sail, lift and drag coefficients are rarely changed at all velocity conditions. However, those of the flexible sail are decreased as the incoming velocity is increased. These are understandably resulted from shape variations due to the flexible material. Therefore aero-elastic similarity should be more carefully considered in the model test rather than other similarities.
Abstract
In order to estimate a yacht sail performance, measuring system of aerodynamic forces acting on the yacht sail is constructed and experiments of flexible model sail are carried out at the medium-size subsonic wind tunnel of Chungnam National University. Experimental results for a flexible sail are compared with experimental and numerical results of fixed shape sail. In case of a fixed shape sail, lift and drag coefficients are rarely changed at all velocity conditions. However, those of the flexible sail are decreased as the incoming velocity is increased. These are understandably resulted from shape variations due to the flexible material. Therefore aero-elastic similarity should be more carefully considered in the model test rather than other similarities.
참고문헌 (5)
- 김우전, "요트 세일 주위의 난류유동 계산", 대한조선학회 논문집, 44(2), pp.64~73 (2007), 대한조선학회
- Fossati, F, "Wind Tunnel Techniques For Investigation And Optimization Of Sailing Yachts Aerodynamics", 2th High Performance Yacht Design Conference (2006)
- 김형태, "풍동 실험시 요트 세일 공력에 미치는 차폐효과에 대한 수치해석", 대한조선학회 논문집, 43(4), pp.431~439 (2006), 대한조선학회
- Shin, S.M, "Computational of flow over a flexible plate using the hybrid cartesian", immersed boundary method, 2007, pp.55(3), 263~282
- 유재훈, "요트의 Main세일과 Jib세일 사이의 간섭 효과에 대한 수치해석", 대한조선학회 논문집, 42(1), pp.24~33 (2005), 대한조선학회