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Experimental study on hydraulic performance of hybrid pick-up device of manganese nodule collector

Authors
Hong, SupChoi, Jong-SuKim, Jin-HaYang, Chan-Kyu
Issue Date
1999
Publisher
ISOPE, Golden, CO, United States
Citation
Proceedings of the ISOPE Ocean Mining Symposium, pp 69 - 77
Pages
9
Journal Title
Proceedings of the ISOPE Ocean Mining Symposium
Start Page
69
End Page
77
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9185
ISSN
0000-0000
Abstract
This paper deals with experimental approaches for enhanced understanding of the hydraulic performance of a hybrid pick-up device developed at KRISO. The experiments were conducted in a 2-D flume tank. The hydraulic nodule lifter of the hybrid pick-up device consisting of water-jet piping and baffle plates was manufactured and tested. Flow rate of water-jets, tow speed, bottom clearance, and position and shape of baffle plates were chosen as experiment parameters. Through a series of experiments, the pick-up efficiency of the hydraulic lifter has been analyzed as function of the experiment parameters, and operation condition assuring high pick-up efficiency has been identified. In order to investigate the working principle of water-jets, the bottom pressures fluctuating due to water-jets were measured with varying conditions of water-jets flow rate, tow speed and bottom clearance. The characteristics of bottom pressure distribution were studied in correlation with the pick-up efficiency. It was recognized that there is a correlation between high pick-up efficiency and longitudinal pressure distribution.
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Kim, Jin Ha
친환경해양개발연구본부 (심해공학연구센터)
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