Due to interference effects, the resistance of a catamaran is not the same as the double resistance of the monohull. If demihulls are close enough to each other, the wave fields generated by each demihull usually significantly interfere causing either advantageous or disadvantageous effects. In this paper, the numerical investigation of interference effects for the Delft 372 catamaran is performed. The verification and validation studies are performed demonstrating the potential of the proposed numerical model for the analysis of interference effects. The investigation of the effect of Froude number and demihull separation on the total resistance of a catamaran, trim angle, and sinkage is conducted. The interference effects are quantified through the interference factor, which is defined based on the total resistance of a catamaran and double the total resistance of the monohull. Finally, the flow field characteristics, wave patterns, and pressure distributions are analysed using Computational Fluid Dynamics.
BrogliaRJacobBZaghiS, et al. Experimental investigation of interference effects for high-speed catamarans. Ocean Eng2014; 76: 75–85.
2.
FarkasADegiuliNMartićI. Numerical investigation into the interaction of resistance components for a series 60 catamaran. Ocean Eng2017; 146: 151–169.
3.
JamaluddinAUtamaIKAPWidodoB, et al. Experimental and numerical study of the resistance component interactions of catamarans. Proc IMechE, Part M: J Engineering for the Maritime Environment2013; 227(1): 51–60.
4.
FaltinsenOM. Hydrodynamics of high-speed Marine Vehicles. New York, NY: Cambridge University Press, 2005.
5.
InselMMollandAF. An investigation into the resistance components of high speed displacement catamarans. Trans R Inst Nav1992; 13: 1–20.
6.
Souto-IglesiasAZamora-RodríguezRFernández-GutiérrezD, et al. Analysis of the wave system of a catamaran for CFD validation. Exp Fluids2007; 42(2): 321–332.
7.
Souto-IglesiasAFernández-GutiérrezDPérez-RojasL. Experimental assessment of interference resistance for a Series 60 catamaran in free and fixed trim-sinkage conditions. Ocean Eng2012; 53: 38–47.
8.
DuranteDBrogliaRDiezM, et al. Accurate experimental benchmark study of a catamaran in regular and irregular head waves including uncertainty quantification. Ocean Eng2020; 195: 106685.
9.
ZaghiSBrogliaRdi MascioA. Experimental and numerical investigations on fast catamarans interference effects. J Hydrodynam B2010; 22(S1): 528–533.
10.
DegiuliNWernerADolinerZ. Comparison of experimental methods for determining wave pattern resistance of a trimaran based on wave measurements in longitudinal cuts. Int Shipbuild Prog2003; 50(1, 2): 57–87.
11.
YildizB. Prediction of residual resistance of a trimaran vessel by using an artificial neural network. Brodogradnja2022; 73(1): 127–140.
12.
HaaseMZurcherKDavidsonG, et al. Novel CFD-based full-scale resistance prediction for large medium-speed catamarans. Ocean Eng2016; 111: 198–208.
13.
BrogliaRZaghiSDi MascioA. Numerical simulation of interference effects for a high-speed catamaran. J Mar Sci Technol2011; 16: 254–269.
14.
YengejehMAAmiriMMMehdigholiH, et al. Numerical study on interference effects and wetted area pattern of asymmetric planing catamarans. Proc IMechE, Part M: J Engineering for the Maritime Environment2016; 230(2): 417–433.
15.
UtamaIKAPJamaluddinAAryawanWD. Experimental investigation into the drag interference of symmetrical and asymmetrical staggered and unstaggered catamarans. J Ocean Technol2012; 7(1): 47–58.
16.
EbrahimiARadMHajilouyA. Experimental and numerical studies on resistance of a catamaran vessel with non-parallel demihulls. Sci Iran2014; 21(3): 600–608.
17.
CastiglioneTHeWSternF, et al. URANS simulations of catamaran interference in shallow water. J Mar Sci Technol2014; 19(1): 33–51.
18.
HeWCastiglioneTKandasamyM, et al. Numerical analysis of the interference effects on resistance, sinkage and trim of a fast catamaran. J Mar Sci Technol2015; 20(2): 292–308.
19.
DoğrulAKahramanoğluEÇakıcıF. Numerical prediction of interference factor in motions and added resistance for Delft catamaran 372. Ocean Eng2021; 223: 108687.
20.
HonaryarAGhiasiMLiuP, et al. A new phenomenon in interference effect on catamaran dynamic response. Int J Mech Sci2021; 190: 106041.
21.
ZhaRSYeHXShenZR, et al. Numerical computations of resistance of high speed catamaran in calm water. J Hydrodynam B2014; 26(6): 930–938.
22.
DegiuliNFarkasAMartićI, et al. Numerical and experimental assessment of the total resistance of a yacht. Brodogradnja2021; 72(3): 61–80.
23.
DaiKLiY. Experimental and numerical investigation on maneuvering performance of small waterplane area twin hull. Brodogradnja2021; 72(2): 93–114.
24.
ChoiJYoonSB. Numerical simulations using momentum source wave-maker applied to RANS equation model. Coast Eng2009; 56(10): 1043–1060.
25.
van’t VeerR. Experimental results of motions, hydrodynamic coefficients and wave loads on the 372 catamaran model. Report number 1129, 1998, Wageningen: TUDelft.
26.
ITTC Specialist Committee. Recommended procedures and GUidelines – practical guidelines for ship CFD applications. In: 26th International Towing Tank Conference, 2011. Rio de Janeiro, Brazil.
27.
Siemens. User guide STAR-CCM+, v.15.02.009, 2020. Siemens.
28.
FarkasADegiuliNMartićI. Impact of biofilm on the resistance characteristics and nominal wake. Proc IMechE, Part M: J Engineering for the Maritime Environment2020; 234(1): 59–75.
