Browse > Article
http://dx.doi.org/10.3744/SNAK.2022.59.3.149

Study of the Open-Water Test and Analysis for a Pumpjet Propulsor in LCT  

Ahn, Jong-Woo (Korea Research Institute of Ships & Ocean Engineering)
Seol, Han-Shin (Korea Research Institute of Ships & Ocean Engineering)
Jung, Hong-Seok (Korea Research Institute of Ships & Ocean Engineering)
Park, Young-Ha (Korea Research Institute of Ships & Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.59, no.3, 2022 , pp. 149-156 More about this Journal
Abstract
In order to study the open-water test and analysis techniques for pumpjet propulsors in the Large Cavitation Tunnel (LCT), at the Korea Research Institute of Ships and Ocean Engineering, a set of test equipment was designed and manufactured. The pumpjet propulsor is composed of rotor, stator and duct resulting in the strong interaction between the components. A ring-shaped sensor was developed to measure the thrust and torque for duct and stator. The test equipment including the pumpjet is installed on an existing POW dynamometer in the reverse direction. The results from the reverse POW test setup were validated against those from the conventional POW test setup in the Towing Tank (TT) as well as in the LCT. The pumpjet open-water test was conducted at the Reynolds number of around 1.0×106, at which the obtained experimental data became stable in the Reynolds number effect test. The open-water test for the rotor (rotor-only) was conducted to study whether the duct and stator should be considered as a part of the hull or the propulsor. On the basis of the test results, it was shown that the duct and stator could be included in the propulsor. The total thrust, combined thrust of rotor, duct, and stator was used for the pumpjet open-water test analysis. As the whole pumpjet is defined as a propulsor, it is thought that the self-propulsion test and analysis could be conducted in the same way as that of the conventional propeller.
Keywords
Pumpjet propulsor; Pumpjet open-water test; Duct & stator sensor; Reverse POW; Large Cavitation Tunnel(LCT);
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Yu, H., Zhang, Z., and Hua, H., 2019. Numerical iInvestigation of tip clearance effects on propulsion performance and pressure fluctuation of a pump-jet propulsor. Ocean Engineering, 192, pp.1-13.
2 Ahn, J.W., Kim, K. S. and Park, Y.H., 2019. Experimental study of the POW characteristics using high-capacity inclined-shaft dynamometer. Journal of Society of Naval Architects of Korea, 58(2), pp.168-174.
3 Ahn, J.W., Seol, H. S., Lee, Y.Y. and Park, Y.H., 2021. Study of the self-propulsion test and analysis for the submerged body in LCT. Journal of Society of Naval Architects of Korea, 58(2), pp.58-65.   DOI
4 Kim, K.S., Kim, K.Y. and Ahn, J.W., 2000. Experimental correlation analysis of propeller open-water characteristics at towing tank and cavitation tunnel. Journal of the Society of Naval Architects of Korea, 37(1), pp.26-39.
5 Park, H.J., Kim, K.S., Suh, S.B. and Park, I.R., 2016. CFD analysis of marine propeller-hub vortex control device interaction. Journal of the Society of Naval Architects of Korea, 53(4), pp.266-274.   DOI
6 Yu, H., Duan, N., Hua, H. and Zhang, Z., 2020. Propulsion performance and unsteady forces of a pump-jet propulsor with different pre-swirl stator parameters. Applied Ocean Research, 100, pp.1-20.
7 Ahn, J.W., Kim, K.S. and Seol, H.S., 2014. Manufacturing method for propeller open-water test device useable in large cavitation tunnel, Patent Number 10-1402573.
8 Choi, G.I., Chun, H.H., Kim, J.S. and Lee, C.M., 1994. Uncertainty analysis for the propeller open water test. Journal of the Society of Naval Architects of Korea, 31(1), pp.71-83.
9 The Ship Hydrodynamics Research Committee, 2009. Ship resistance and propulsion. The Society of Naval Architects of Korea.
10 Li, H., Huang, Q., Pan, G., and Dong, X., 2020. The transient prediction of a pre-swirl stator pump-jet propulsor and a comparative study of hybrid RANS/LES simulation on the wake vortices,.Ocean Engineering, 203, pp.1-21.
11 Renilson, R., 2015. Submarine hydrodynamicsm, Springer Briefs in Applied Sciences and Technology.