NUMERICAL ANALYSIS OF THE FLOW AROUND THE HULL AND THE PROPELLER OF A SHIP ADVANCING IN SHALLOW WATER

- Journal title : Journal of computational fluids engineering
- Volume 20, Issue 4, 2015, pp.93-101
- Publisher : Korea Society of Computational Fluids Engineering
- DOI : 10.6112/kscfe.2015.20.4.093

Title & Authors

NUMERICAL ANALYSIS OF THE FLOW AROUND THE HULL AND THE PROPELLER OF A SHIP ADVANCING IN SHALLOW WATER

Park, I.R.;

Park, I.R.;

Abstract

This paper provides numerical results of the simulation for the flow around the hull and the propeller of KCS model ship advancing in shallow water conditions. A finite volume method is used to solve the unsteady Reynolds averaged Navier-Stokes(RANS) equations, where the wave-making problem is solved by using a volume-of-fluid(VOF) method. The wave formed near the hull surface in shallow water conditions shows a deep trough dominant pattern that causes the loss of buoyancy followed by hull squat. The flow past the hull increases as the depth of water decreases. However, the axial flow velocity around the stern shows a reduction in magnitude by the effect of shallow water accompanied by the hull-propeller interaction. As a results, the thrust and torque coefficient increase about 8.3% and 6.2%, respectively for a depth of h/T=3.0 corresponding to a depth Froude number of . The resistance coefficient increases about 11.6% at this Froude number condition.

Keywords

Shallow Water;Computational Fluid Dynamics, CFD;Hull-Propeller Interaction;Free Surface Flow;Self-propulsion;

Language

Korean

Cited by

References

1.

2002, Hewlett, C., Daggett, L., Stocks, D., Ankudinov, V., Arlington, D., Arlington, P. and Taschereau, A., "Dynamic squat and under-keel clearance of ships in confined channels," 30th PIANC-AIPCN Congress, Sydney, Australia, pp.22-24.

2.

2004, Kwon, S.Y. and Lee, Y.G., "A Study on the Resistance Characteristics of High-Speed Ship in Shallow Water Condition," Journal of the Society of Naval Architects of Korea, 41(2), pp.1-11.

3.

2009, Beaulieu, C., Gharbi, S., Ouarda, T.B.M.J. and Seidou, O., "Statistical Approach to Model the Deep Draft Ships' Squat in the St.Lawrence Waterway," Journal of Waterway, Port, Costal, and Ocean Engineering, 135(3), pp.80-90.

4.

2011, Shin, H.K. and Choi, S.H., "Analysis of Ship Squat in Confined Water Using CFD," Journal of the Society of Naval Architects of Korea, 48(4), pp.317-324.

5.

2012, Lataire, E., Vantorre, M. and Delefortrie, G., "A Prediction Method for Squat in Restricted and Unrestricted Rectangular Fairways," Ocean Engineering, 55, pp.71-80.

6.

2014, Yun, K.H., Park, B.J. and Yeo, D.J., "Experimental Study of Ship Squat for KCS in Shallow Water," Journal of the Society of Naval Architects of Korea, 51(1), pp.34-41.

7.

2014, Yun, K.H., Park, K.R. and Park, B.J., "Study of Ship Squat for KVLCC2 in Shallow Water," Journal of the Society of Naval Architects of Korea, 51(6), pp.593-547.

8.

2005, Hino, T.(editor), Proceedings of the Workshop on Numerical Ship Hydrodynamics Tokyo 2005, NMRI, Japan.

9.

2010, Larsson, L., Stern, F. and Visonneau, M.(Editors), Proceedings of the Workshop on Numerical Ship Hydrodynamics Gothenburg 2010, Chalmers University of Technology, Gothenburg, Sweden.

10.

2015, CD-adapco, STAR-CCM+ 10.04 Usre's Manual.

11.

1998, Muzaferija, S., Peric, M., Sames, P. and Schellin, T., "A Two-Fluid Navier Stokes Solver to Simulate Water Entry," Proceedings of the 22nd Symposium on Naval Hydrodynamics, Washington, DC, U.S.A.

12.

2001, Kim, W.J., Van, D.H. and Kim, D.H., "Measurement of flows around modern commercial ship models," Experiments in Fluids, 31, pp.567-578.

13.

2010, Lee, J.H., Park, B.J. and Rhee, S.H., "Ship Resistance And Propulsion Performance Test Using Hybrid Mesh And Sliding Mesh," Journal of Computational Fluids Engineering, 15(1), pp.81-87.