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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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This study is constructed to investigate the sloshing effect on the motions of a two-dimensional rectangular cylinder experimentally and numerically. The modes of motion under consideration are sway and roll, and also experimental cases are divided by two categories; 1-DoF roll motion and 2-DoF motion (Coupling sway and roll). It is found that the sway response is considerably affected by the motion of the fluid, particularly near the sloshing natural frequency, while the roll response changes comparatively small. The dominant mode of motion is analyzed for 2-DoF experiments as well. The measured data for 1-DoF motions is compared with numerical results obtained by the Multi-modal approach. The numerical schemes vary in detail with the number of dominant sloshing modes; i.e. there is a single dominant mode for the Single-dominant method, while the Model 2 method assumes that the first two modes are superior. For the roll motion, numerical results obtained by the two different methods are relatively in good agreement with the experiments, and these two results are similar in most wave frequency range. However, the discrepancies are apparent where the fluid motion is not governed by a single mode. But both of numerical methods over-predict the motion at the vicinity of the sloshing natural frequency. In order to correct the discrepancy, the modal damping needs to be investigated more precisely. Furthermore, another multi-modal approach, such as the Boussinesq-type method, seems to be required in the region of the intermediate liquid.
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1. 서론
2. 실험적 접근
3. 수치적 접근
4. 결론
참고문헌
참고문헌 (12)
참고문헌 신청
Choi, Y.R. / 1991 / Transient Surge Motion of a Moored Ship in Random Waves / International Journal of Offshore & Polar Engineering 1(2):239~241
Faltinsen, O.M. / 2000 / Multidimensional Modal Analysis of Nonlinear Sloshing in a Rectangular Tank with Finite Water Depth / Journal of Fluid Mechanics 407(1):201~234
Faltinsen, O.M. / 2001 / An Adaptive Multimodal Approach to Nonlinear Sloshing in a Rectangular Tank / Journal of Fluid Mechanics 432:167~200
Faltinsen, O.M. / 2009 / Sloshing / Cambridge University Press
Fox, D.W. / 1983 / Sloshing frequencies / Zeitschrift Fur Angewandte Mathematik Und Physik 34(5):668~696
Faltinsen, O.M. / 2000 / Multidimensional Modal Analysis of Nonlinear Sloshing in a Rectangular Tank with Finite Water Depth / Journal of Fluid Mechanics 407(1):201~234
Faltinsen, O.M. / 2001 / An Adaptive Multimodal Approach to Nonlinear Sloshing in a Rectangular Tank / Journal of Fluid Mechanics 432:167~200
Faltinsen, O.M. / 2009 / Sloshing / Cambridge University Press
Fox, D.W. / 1983 / Sloshing frequencies / Zeitschrift Fur Angewandte Mathematik Und Physik 34(5):668~696
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UCI(KEPA) : I410-ECN-0101-2014-330-002975635