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Article

Monitoring-System Development for a Bottom-Set Gillnet through Time-Domain Dynamic Simulations

1
Department of Ocean Engineering, Texas A&M University, Haynes Engineering Building, 727 Ross Street, College Station, TX 77843, USA
2
School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(6), 1210; https://doi.org/10.3390/app9061210
Received: 6 March 2019 / Revised: 18 March 2019 / Accepted: 19 March 2019 / Published: 22 March 2019
(This article belongs to the Special Issue Fishery Acoustics, Applied Sciences and Practical Applications)
This paper investigates the sensor-based monitoring feasibility of a bottom-set gillnet through time-domain dynamic simulations for various current and wave conditions and failure scenarios. The dimension and design parameters of the bottom-set gillnet were based on an existing model used in Korea, and the measured environmental data were acquired from the southwest coast of Korea and utilized for the dynamic analysis. For efficient numerical modeling of nets, an equivalent net model which uses fewer line elements was considered, and the projected area, wet weight, and axial stiffness were accordingly adjusted. The hydrodynamic forces on the entire gillnet were estimated using a Morison-force model on the instantaneous positions of the net. The designed gillnet provided excellent stretching performance even under low current velocity. The dynamic responses under wave excitations were not significant in operating conditions; however, significant motions were observed in the fishery-prohibition condition. The proposed monitoring system consisted of an accelerometer, tension sensors, and the global positioning system. Numerous line-failure scenarios were simulated, and the proposed monitoring system could effectively detect a specific problem from the combined patterns of sensor signals by a problem-detection algorithm. View Full-Text
Keywords: fishing gear; bottom-set gillnet; computer simulation; dynamic analysis; equivalent net model; numerical sensor; monitoring system; failure scenarios; problem-detection algorithm fishing gear; bottom-set gillnet; computer simulation; dynamic analysis; equivalent net model; numerical sensor; monitoring system; failure scenarios; problem-detection algorithm
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MDPI and ACS Style

Jin, C.; Kim, H.; Kim, M.-H.; Kim, K. Monitoring-System Development for a Bottom-Set Gillnet through Time-Domain Dynamic Simulations. Appl. Sci. 2019, 9, 1210. https://doi.org/10.3390/app9061210

AMA Style

Jin C, Kim H, Kim M-H, Kim K. Monitoring-System Development for a Bottom-Set Gillnet through Time-Domain Dynamic Simulations. Applied Sciences. 2019; 9(6):1210. https://doi.org/10.3390/app9061210

Chicago/Turabian Style

Jin, Chungkuk, HanSung Kim, Moo-Hyun Kim, and Kiseon Kim. 2019. "Monitoring-System Development for a Bottom-Set Gillnet through Time-Domain Dynamic Simulations" Applied Sciences 9, no. 6: 1210. https://doi.org/10.3390/app9061210

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