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1,544 results on '"Pan, Guang"'

11. Optimal energy harvesting efficiency from vortex-induced vibration of a circular cylinder under flow

Author

Han, Peng, Huang, Qiaogao, Pan, Guang, Qin, Denghui, Wang, Wei, Gonçalves, Rodolfo T., and Zhao, Jisheng

Subjects
Physics - Fluid Dynamics
Abstract

This work applies a combined approach a reduced-order model (ROM) together with experiments and direct numerical simulations to investigate the optimal efficiency of fluid-flow energy harvesting from transverse vortex-induced vibration (VIV) of a circular cylinder. High resolution efficiency maps were predicted over wide ranges of flow reduced velocities and structural damping ratios, and the maximum efficiency and optimal settings of damping ratio and reduced velocity were then examined for different mass ratios and Reynolds numbers. Efficiencies predicted by the ROM were also validated against either experiments or direct simulations. The present work indicates that: (i) the maximum efficiency is controlled by both the incoming reduced velocity and the product of mass ratio and structural damping ratio, which is similar to the maximum amplitude of VIV; (ii) the maximum efficiency at a relatively high Reynolds number ($Re \approx 6 \times 10^3$) in subcritical regime is higher than that of a low Reynolds number ($Re = 150$) in laminar regime; (iii) the energy harvesting efficiency from VIV of a circular cylinder with a low mass ratio is more robust than that with a high mass ratio. This finding suggests that the VIV harvester performs better in water than in air.

Published
2023

13. Dynamic Design Method of Vortex Induced Vibration Suppression Device for Strakes at High Reynolds Number

Author

Chen, Dongyang, Zhang, Xinsheng, Rao, Zhi, Lin, Yaochen, Pan, Guang, Li, Jiayi, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Rui, Xiaoting, editor, and Liu, Caishan, editor

Published
2024
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14. Vibration Characteristic Analysis and Optimization of the Propulsion Shaft in the Underwater Vehicle

Author

An, Yuchen, Liu, Jing, Yang, Chiye, Pan, Guang, Ceccarelli, Marco, Series Editor, Agrawal, Sunil K., Advisory Editor, Corves, Burkhard, Advisory Editor, Glazunov, Victor, Advisory Editor, Hernández, Alfonso, Advisory Editor, Huang, Tian, Advisory Editor, Jauregui Correa, Juan Carlos, Advisory Editor, Takeda, Yukio, Advisory Editor, Chu, Fulei, editor, and Qin, Zhaoye, editor

Published
2024
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40. Model predictive path following control of underwater vehicle based on RBF neural network

Author

GUO Linyu, GAO Jian, JIAO Huifeng, SONG Yunxuan, CHEN Yimin, and PAN Guang

Subjects
自主水下航行器, 模型预测控制, 径向基神经网络, 路径跟踪控制, Motor vehicles. Aeronautics. Astronautics, TL1-4050
Abstract

A model prediction controller (MPC) based on radial basis function (RBF) neural network is designed to counter the model uncertainty and multiple constraints of the autonomous underwater vehicle (AUV). On this basis of path following control with MPC, the RBF neural network is trained online with real-time measurement data to compensate for the AUV's model uncertainty, thus suppressing the interference of model uncertainty on the MPC and reducing its overshoot and tracking error. Simulation results show that the path following algorithm based on RBF-MPC has better transient and steady-state performance compared with the classical MPC algorithm.

Published
2023
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49. Sequence structure, coagulation system and physico-mechanical properties of nitrile rubber with high bound acrylonitrile content

Author

ZHENG Hao-shuai, GUO Xue, MA Ying-he, QIAO Ya-wei, YANG Ya-hui, PAN Guang-qin

Subjects
nitrile rubber, bound acrylonitrile content, sequence structure, nuclear magnetic resonance spectroscopy, coagulation system, physico-mechanical property, Organic chemistry, QD241-441, Chemical engineering, TP155-156, Chemicals: Manufacture, use, etc., TP200-248
Abstract

A kind of nitrile rubber (NBR) with high bound acrylonitrile content was prepared by low-temperature emulsion-polymerization and the sequence structure of the polymer was characterized by proton nuclear magnetic resonance spectroscopy, and the effects of different coagulants on the coagulation behavior and physico-mechanical properties of the polymer were studied. The results showed that the BAA sequence structure appeared in NBR with high bound acrylonitrile content, and the content of BAA, BAB, and ABA sequence structures increased gradually and that of BBB and BBA sequence structures decreased gradually with the increase in bound acrylonitrile content; the coagulation efficiency of CaCl2 and Al2(SO4)3 was much higher than those of NaCl and H2SO4, and the coagulation efficiency of the first two both reached about 98%; Al2(SO4)3 could improve the hardness, tensile strength, modulus, and elongation at break of NBR, and the elongation at break of NBR prepared from Al2(SO4)3 was 566%.

Published
2024
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50. A Lyapunov-Based Model Predictive Virtual Vehicle Guidance for Path Following Control of Autonomous Marine Vehicles

Author

Min, Boxu, Gao, Jian, Lu, Xi, Zhang, Zhenchi, Chen, Yimin, Pan, Guang, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Yang, Huayong, editor, Liu, Honghai, editor, Zou, Jun, editor, Yin, Zhouping, editor, Liu, Lianqing, editor, Yang, Geng, editor, Ouyang, Xiaoping, editor, and Wang, Zhiyong, editor

Published
2023
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