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Three-dimensional evolution of wind waves from gravity-capillary to short gravity range |
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| Institution: | 1. Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, International Joint Laboratory on Low Carbon Clean Energy Innovation, Department of Energy and Power Engineering, Tsinghua University, Beijing, China;2. School of Engineering, Brown University, Providence, Rhode Island, 02912, USA;3. Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China |
| Abstract: | We report the first systematic laboratory observations of 3-D features of wind waves at early stages of wave field development. The experiments performed in the large IRPHE-Luminy wind-wave tank provided instantaneous reconstruction of the decimeter-scale water surface motions based on simultaneous imaging of the wave slopes in two perpendicular directions. Five essentially distinct regimes in the 3-D evolution of the dominant waves have been identified. Each regime is characterized by different types of 3-D wave patterns associated with specific ranges of wave scale and wave steepness. The likely scenario of the evolution and the possible physical mechanisms of the pattern formation are discussed. |
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