The Flow Analysis of Buffer System in Lifting System of Deep-sea Manganese Nodules

Chi Ho Yoon; Young Ju Kim; Nam Sub Woo

doi:10.12972/ksmer.2017.54.2.117

All Issue

2017 Vol.54, Issue 2 Preview Page Next Page

Research Paper

The Flow Analysis of Buffer System in Lifting System of Deep-sea Manganese Nodules 심해저 광물자원 양광시스템에서 버퍼시스템 유동해석

30 April 2017. pp. 117-122

PDF XML

Abstract

In this study buffer system was designed for the development of the lifting system of deep-sea mineral resources, and computational fluid dynamic(CFD) simulation was performed. Firstly, grid model of buffer system having storage tank, flexible hoses, and outlet pipes were made. Then simulations of pressure and velocity distribution were conducted according to fluid flow in the buffer system. The mixture fluid from flexible hoses to the storage tank shows symmetrically circulating flow pattern with pressure drop and the pressure rises again at the exit of the tank. The results present important facts for manufacturing a buffer system. Design of tank will be required to reduce or remove circulation due to pressure loss by circulation flow in tank. Pressure loss from outlet pipe is caused due to energy loss by wall friction, and it will reduce flow velocity and disturb flow of manganese nodules.

Keywords

Deep-sea mineral resources

Lifting system

Buffer system

Computational fluid dynamics (CFD)

본 연구에서는 심해저 광물자원 개발을 위해 사용되는 양광시스템에서 버퍼시스템을 설계하고 전산해석을 수행하였다. 저장탱크와 유연관 및 출구관을 가지는 버퍼시스템 격자모델을 형성화하였고 버퍼시스템 내에서의 망간단괴와 해수의 유동을 해석하였다. 유연관로부터 저장탱크로 유입된 유체는 압력이 감소되면서 좌우 대칭의 순환류가 발생하였고 출구관을 통해 배출되면서 압력이 상승하였다. 이러한 결과는 버퍼시스템 설계제작에서 중요한 사실을 제공한다. 먼저, 탱크 내에서의 순환유동은 압력손실로 이어지기 때문에 이러한 주 유동을 축소하거나 제거할 수 있는 탱크의 설계가 필요하다. 또한 출구관에서의 압력손실은 벽면과의 마찰로 의한 에너지 손실 때문에 발생되며 이는 유동속도가 감소시키고 궁극적으로 망간단괴의 유동을 방해하므로 실제 탱크제작 및 현장가동 시에는 이러한 문제요소들을 반영하여 설계해야 한다.

키워드

심해저 광물자원

양광시스템

버퍼시스템

전산유체역학

References

Chung, J.S., 1994, "Advance in Deep-Ocean Mining Systems Research," The Proceedings of The 4^th International Offshore and Polar Engineering Conference, pp. 18-31.

Chung, J.S., 2002, "Deep Seabed Mining Environment: Priminary Engineering and Environmental Assessment," ISOPE Special Report OMS-EN-1.

2014-2020 Long-term Plan of Oceans and Fisheries R&D, 2014, Korea Ministry of Oceans and Fisheries, p. 101.

Yoon, C.H., Kim, I.K., Kwon, K.S. and Kwon, O.K, 1998, "The Numerical Analysis of Particle Flow Patterns in Pipe for Hydraulic Pumping System in Deep-sea Manganese Nodules," Journal of the Korean Institute of Mineral and Energy Resources Engineers, Vol. 35, No. 2, pp. 157-164.

Yoon, C.H., Kim, I.K., Kwon, K.S. and Kwon, O.K, 1999, "Analysis of Unsteady State Flow Mechanism in Pipe for Hydraulic Pumping System in Deep-sea Manganese Nodules," Journal of the Korean Institute of Mineral and Energy Resources Engineers, Vol. 36, No. 1, pp. 33-41.

Yoon, C.H., Kwon, K.S., Kwon, S.K., Lee, D.K., Park, Y.C., Kwon, O.K. and Sung, W.M., 2001, "An Experimental Study on the Flow Characteristics of Solid-Liquid Two-Phase Mixture in a Flexible Hose," The proceedings of The 4th ISOPE Ocean Mining Symposium, pp. 122-126.

Yoon, C.H., Lee, D.K., Park, Y.C. and Kwon, K.S., 2004, "Design and Test of Hydraulic Pumping System with 30m Height Scale," The Proceedings of The 13th International Offshore and Polar Engineering Conference, pp. 61-65.

Yoon, C.H., Lee, D.K., Park, Y.C. and Kwon, K.S., 2005, "Flow Analysis of Solid-liquid Mixture in a Lifting Pump," The Proceedings of The 6^th ISOPE Ocean Mining Symposium, pp.101-105.

Yoon, C.H., Park, Y.C., Park, J.M. and Kim, Y.J., 2009, "Solid-liquid flow experiment with real and artificial manganese nodules ion flexible hoses," Journal of offshore and polar engineering, Vol. 19, No. 1, p.77-79.

Yoon, C.H., Park, J.M., Kang, J.S., Kim, Y.J., Park, Y.C., Park, S.G., Kim, C.R., Kang, S.S., Kim, S.B., Kim, W.T., Kwon, S.K. and Ahn, B.S., 2010, "Integrated Mining Test in the Shallow Sea for the Development of Deep-sea Mineral Resources in Korea," Journal of the Korean Society of Geosystem Engineering, Vol. 47, No. 4, pp. 557-565.

Yoon, C.H., Jo, C.H., Park, J.M., Park, S.G., Kang, J.S. and Lee, K.B., 2011, "A Monitoring Plan of the Lifting System for Deep-sea Mineral Resources," Journal of the Korean Society of Geosystem Engineering, Vol. 48, No. 3, pp. 351-358.

Yoon, C.H., Shin, H.Y., and Kim, I.K., 2013, "Optimized Flowing Characteristicsd of Effective Lifting of Deep Ocean Manganese Nodules," Journal of the Korean Institute of Mineral and Energy Resources Engineers, Vol. 50, No. 3, pp. 368-376.

10.12972/ksmer.2013.50.3.368

Yoon, C.H., Kim, Y.J., Woo, N.S. and Choi, J.W., 2014, "Design of Flexiblke Hoses of Lifting System in Deep Sea Mineral Resources," Journal of the Korean Society of Geosystem Engineering, Vol. 51, No. 5, pp. 722-728.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 54
No :2
Pages :117-122
Received Date : 2017-03-06
Revised Date : 2017-04-26
Accepted Date : 2017-04-26
DOI :https://doi.org/10.12972/ksmer.2017.54.2.117

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

All Issue