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Yongqing Lai, Wei Li, Ben He, Gen Xiong, Renqiang Xi and Piguang Wang
At present, monopile-supported offshore wind turbines (MOWTs) are widely used in offshore wind farms. The influence of blade flexibility on the dynamic behaviors of MOWTs excited by waves and earthquakes was investigated in this study. Numerical analysis...
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Kunpeng Tian, Bin Zhang, Cheng Shen, Haolu Liu, Jicheng Huang and Aimin Ji
In response to the unclear issue of whether the dynamic cutting performance and structural parameters of an industrial hemp blade, which was developed earlier based on the bionic prototype of the batocera horsfieldi, can be optimized in actual working co...
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Hao Zhu, Xiaoning He, Shuqi Shang, Zhuang Zhao, Haiqing Wang, Ying Tan, Chengpeng Li and Dongwei Wang
Severe plant entanglement and high power consumption are the main problems of the up-cut rotary blade during Cyperus esculentus harvesting. Optimization of the rotary blade edge can enhance the soil-cutting and plant-crushing performance. In this study, ...
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Xiangjun Li, Jiezhong Dong, Hua Chen and Huawei Lu
Nowadays, with the increase of the thrust-to-weight ratio of the aero engines, the high aerodynamic load has made corner separation an issue for axial compressors. The complex three-dimensional flow field makes it challenging to suppress the corner separ...
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Lingkun Chen, Shusheng Bi, Yueri Cai, Yong Cao and Guang Pan
Bionic propulsion has advantages over traditional blade propellers, such as efficiency and noise control. Existing research on ray-inspired robot fish has mainly focused on a single type of pectoral fin as bionic propeller, which only performed well in t...
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Daniel Hermann, Manfred Wirsum, Douglas Robinson and Philipp Jenny
State-of-the-art centrifugal compressor units utilised in pipeline and in energy storage applications face the challenge of flexible and highly efficient operation. Geometric contouring on the hub side near a vaned diffuser affects the flow in a way whic...
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Chongfei Sun, Jianzhong Shang, Zirong Luo, Zhongyue Lu, Guoheng Wu and Yiming Zhu
Unmanned marine equipment has been increasingly developed for open seas. The lack of efficient and reliable power supply is currently one of the bottlenecks restricting the practical application of these devices. In order to provide a viable power supply...
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Pieter Maljaars, Mirek Kaminski and Henk Den Besten
Boundary element methods (BEM) have been used for propeller hydrodynamic calculations since the 1990s. More recently, these methods are being used in combination with finite element methods (FEM) in order to calculate flexible propeller fluid?structure i...
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Pieter Maljaars, Laurette Bronswijk, Jaap Windt, Nicola Grasso and Mirek Kaminski
In the past several decades, many papers have been published on fluid–structure coupled calculations to analyse the hydro-elastic response of flexible (composite) propellers. The flow is usually modelled either by the Navier–Stokes equations ...
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Yuval Keren, Haim Abramovich and Rimon Arieli
To propel a lightweight structure, a hybrid wing structure was designed; the wing?s geometry resembled a rotor blade, and its flexibility resembled an insect?s flapping wing. The wing was designed to be flexible in twist and spanwise rigid, thus maintain...
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