Results 31 to 40 of about 35,746 (178)
Efficient cruising for swimming and flying animals is dictated by fluid drag
, 2018 Many swimming and flying animals are observed to cruise in a narrow range of Strouhal numbers, where the Strouhal number ${St = 2fA/U}$ is a dimensionless parameter that relates stroke frequency $f$, amplitude $A$, and forward speed $U$. Dolphins, sharks,
Floryan, Daniel +2 more
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Performance Evaluation of Flapping-Wing Energy Harvester in Confined Duct Environments
EnergiesThis study investigates the impact of different duct designs on the energy-harvesting performance of oscillating-wing systems in both partially and fully confined environments.
Maqusud Alam, Chang-Hyun Sohn
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Geofluids, 2021 This work is aimed at investigating the structural deterioration and the frost heaving force evolution characteristics of flawed rocks using a self-developed frost heaving force (FHF) measurement system. Three kinds of preflawed rocks with different flaw
Yu Wang +4 more
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A Simplified Viscoelastic Solution of the Frost Heaving Force of Cavity Water behind Tunnel Linings
Advances in Civil Engineering, 2020 With the high demand for construction of tunnels in China’s severe cold regions, the problem of frost heaving has become an important factor that endangers tunnel safety.
Jie-Tao Guo +3 more
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You-qi chuyun, 2020 For the oil and gas pipeline operating in the permafrost regions, buckling deformation is usually caused by frost heaving and thaw settlement of the foundation soil, which affects the safety and stability of pipeline seriously.
Wei WANG +5 more
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, 1969 Mathematical model is formulated for an air pad which is capable of lifting a structure to a height of 0.125 inch. Design is superior to conventional air cushion devices because it eliminates flutter, vibration, heaving, and ...
Blaise, H. T., Dane, D. H.
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Universal scaling law in drag-to-thrust wake transition of flapping foils
, 2019 Reversed von K\'arm\'an streets are responsible for a velocity surplus in the wake of flapping foils, indicating the onset of thrust generation. However, the wake pattern cannot be predicted based solely on the flapping peak-to-peak amplitude $A$ and ...
Ganapathisubramani, B. +2 more
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Geofluids, 2021 Ice-driven mechanical weathering in cold regions is considered a main factor impacting the stability of rock mass. In this work, the response surface method (RSM) was employed to evaluate and optimize the multiple frost heaving parameters to seek the ...
Yu Wang +3 more
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Journal of Marine Science and Engineering, 2021 Flapping foils are studied to achieve an efficient propeller. The performance of the flapping foil is influenced by many factors such as oncoming vortices, heaving amplitude, and geometrical parameters.
Jian Li +5 more
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Optimal damping profiles for a heaving buoy wave-energy converter [PDF]
, 2005 This paper explores optimal damping profiles for a heaving buoy wave energy converter (WEC). The approach is mathematical and the model of Eidsmoen (1995) is used as a basis.
Babarit +12 more
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