Investigation of an Unconventional SWATH Based on Zero Wave Resistance Theory

Abstract

Abstract:

An unconventional small-waterplane-area-twin-hull(SWATH) ship was designed, whose twin hulls were slightly curved in an S-shape and arranged at a mean yaw angle but mirror symmetric to their common longitudinal center plane. Based on the “zero wave resistance” theory, a viscous flow theory which could solve the Reynolds-averaged Navier-Stokes (RANS) equations was used to study the resistance performance of the unconventional SWATH ship in calm water. In comparison with a benchmark conventional SWATH ship, which features a typical torpedo-shaped body, the simulation results prove the effectiveness of the S-shaped design. The unconventional SWATH ship has much less low-speed drag than its conventional SWATH counterpart and comparable total drag at high speeds.

Key words: small-waterplane-area-twin-hull(SWATH), S-shaped hull, ship resistance, zero wave

CLC Number:

U 661.3

QIAN Peng,YI Hong,LI Yinghui,YU Shengjie. Investigation of an Unconventional SWATH Based on Zero Wave Resistance Theory[J]. Journal of Shanghai Jiaotong University, 2014, 48(08): 1053-1058.

References

［1］Brizzolara S, Vernengo G. Automatic optimization computational method for unconventional SWATH ships resistance［J］. International Journal of Mathematical Models and Methods in Applied Sciences, 2011, 5(5): 882889.

［2］Yeung R W, Wan H. Multihull configuration designA framework for powering minimization［C］//26th International Conference on Offshore Mechanics and Arctic Engineering. New York: American Society of Mechanical Engineers, 2005: 833842.

［3］Beena V I, Subramanian V A. Parametric studies on seaworthiness of SWATH ships［J］. Ocean Engineering, 2003, 30(9): 10771106.

［4］Gaggero S, Brizzolara S. An integrated tool for concept and final design of optimum swathull forms［C］//Proc of NAV 2006. Genoa: International Conference on Ship and Shipping Research, 2006: 205211.

［5］Dubrovsky V A, Matveev K I. Small waterplane area ship models: Reanalysis of test results based on scale effect and form drag［J］. Ocean Engineering, 2006, 33(7): 950963.

［6］史一呜, 蒋志鹏, 王文富. 小水线面船约束模水动力试验［J］. 上海交通大学学报, 2003,37(8): 12261228.

SHI Yiming, JIANG Zhipeng, WANG Wenfu. Small waterplane area twin hull (SWATH) hydrodynamic property research by restrained model test ［J］. Journal of Shanghai Jiaotong University, 2003,37(8):

12261228.

［7］顾敏童, 郑丰, 裘泳铭. 小水线面三体船阻力试验研究［J］. 上海交通大学学报, 2003,37(8): 12221225.

GU Mintong, ZHENG Feng, QIU Yongming. Research on the resistance test of trimaran small waterplane area center hull ［J］. Journal of Shanghai Jiaotong University, 2003, 37(8): 12221225

［8］Brizzolara S, Curtin T, Bovio M, et al. Concept design and hydrodynamic optimization of an innovative SWATH USV by CFD methods［J］. Ocean Dynamics, 2012, 62(2): 227237.

［9］Chen X N, Sharma S D, Stuntz N. Zero wave resistance for ships moving in shallow channels at supercritical speeds. Part 2. Improved theory and model experiment［J］. Journal of Fluid Mechanics, 2003, 478: 111124.

［10］Chen X N, Sharma S D. Zero wave resistance for ships moving in shallow channels at supercritical speeds［J］. Journal of Fluid Mechanics, 1997,335: 305321.

［11］Kirchgssner K, Sharma S D, Chen X N. Theoretical and experimental studies of an SCatamaran［J］. MathematicsKey Technology for the Future, 2003，2(1): 103124.

［12］Qian Peng, Yi Hong, Li Yinghui. Investigation on hydrodynamics of fast ships with different bowshapes in waves and restricted waters［C］//The 23rd International Offshore and Polar Engineering Conference. Anchorage, AK: International Society of Offshore and Polar Engineers, 2013: 601610.

［13］Zwart P J, Godin P G, Penrose J, et al. Simulation of unsteady freesurface flow around a ship hull using a fully coupled multiphase flow method［J］. Journal of Marine Science and Technology, 2008, 13(4): 346355.

［14］Weymouth G D, Wilson R V, Stern F. RANS computational fluid dynamics predictions of pitch and heave ship motions in head seas［J］. Journal of Ship Research, 2005, 49(2): 8097.

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