Method to Calculate Resistance of
High-Speed Displacement Ship Taking the Effect of
Dynamic Sinkage and Trim and Fluid Viscosity into Account

doi:10.1007/s12204-012-1301-1

Journal of shanghai Jiaotong University (Science) ›› 2012, Vol. 17 ›› Issue (4): 421-426.doi: 10.1007/s12204-012-1301-1

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Method to Calculate Resistance of High-Speed Displacement Ship Taking the Effect of Dynamic Sinkage and Trim and Fluid Viscosity into Account

YAO Chao-bang (姚朝帮), DONG Wen-cai (董文才)

(Department of Naval Architecture & Ocean Engineering, Naval University of Engineering, Wuhan 430033, China)
(Department of Naval Architecture & Ocean Engineering, Naval University of Engineering, Wuhan 430033, China)

Online:2012-08-30 Published:2012-11-16
Contact: YAO Chao-bang (姚朝帮) E-mail: hgycb2004111@163.com

Abstract

Abstract: A method is presented to calculate the resistance of a high-speed displacement ship taking the effect of sinkage and trim and viscosity of fluid into account. A free surface flow field is evaluated by solving Reynolds averaged Navier-Stokes (RANS) equations with volume of fluid (VoF) method. The sinkage and trim are computed by equating the vertical force and pitching moment to the hydrostatic restoring force and moment. The software Fluent, Maxsurf and MATLAB are used to implement this method. With dynamic mesh being used, the position of a ship is updated by the motion of “ship plus boundary layer” grid zone. The hull factors are introduced for fast calculating the running attitude of a ship. The method has been applied to the ship model INSEAN2340 for different Froude numbers and is found to be efficient for evaluating the flow field, resistance, sinkage and trim.

摘要： A method is presented to calculate the resistance of a high-speed displacement ship taking the effect of sinkage and trim and viscosity of fluid into account. A free surface flow field is evaluated by solving Reynolds averaged Navier-Stokes (RANS) equations with volume of fluid (VoF) method. The sinkage and trim are computed by equating the vertical force and pitching moment to the hydrostatic restoring force and moment. The software Fluent, Maxsurf and MATLAB are used to implement this method. With dynamic mesh being used, the position of a ship is updated by the motion of “ship plus boundary layer” grid zone. The hull factors are introduced for fast calculating the running attitude of a ship. The method has been applied to the ship model INSEAN2340 for different Froude numbers and is found to be efficient for evaluating the flow field, resistance, sinkage and trim.

CLC Number:

U 661.32

YAO Chao-bang (姚朝帮), DONG Wen-cai (董文才). Method to Calculate Resistance of High-Speed Displacement Ship Taking the Effect of Dynamic Sinkage and Trim and Fluid Viscosity into Account[J]. Journal of shanghai Jiaotong University (Science), 2012, 17(4): 421-426.

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Method to Calculate Resistance of High-Speed Displacement Ship Taking the Effect of Dynamic Sinkage and Trim and Fluid Viscosity into Account

Method to Calculate Resistance of High-Speed Displacement Ship Taking the Effect of Dynamic Sinkage and Trim and Fluid Viscosity into Account

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