Test Case 1.4

KVLCC2M [Geometry ]

Conditions

• Towing condition in still water
• Fixed(even keel)
• Double model flow

Froude number ( Fn )	Reynolds number ( Rn )
0	3.945×106

Items and Remarks

Figure Number	Items	Remarks
	Integral variables: Coefficients of    total resistance (CT), split into    pressure (CP) and    friction (CF) components and Uncertainty analysis( USN, UV, E )	Experimental results are available Table( NMRI ) UD = 0.7 [%CT]
Fig. 1.4-1	Axial velocity contours and cross flow vectors on the propeller plane (x/Lpp=0.48)
Fig. 1.4-2	Velocity on the propeller plane (x/Lpp=0.48) at z/Lpp=-0.05	To be compared with experimental results download ( NMRI )
Fig. 1.4-3	Uncertainty analysis of the above item	UD = 0.5, 1.0, 1.0 for u, v. w [%U] along the entire cut (proceedings of CFD Wordshop 2000)
Fig. 1.4-4	Kinematic eddy viscosity ( νt ) and longitudinal component of vorticity ( ω x ) contours on the propeller plane   (x / LPP = 0.48)
Fig. 1.4-5	Hull surface pressure contours ( port side view )
Fig. 1.4-6	Hull surface pressure contours ( back view )
Fig. 1.4-7	Hull surface pressure contours ( bottom view )
Fig. 1.4-8	Limiting streamlines ( port side view )

• Coordinate system for comparisons is fixed to midship on the undisturbed waterplane.
• All quantities are non-dimensionalized by density of water ( $\rho$ ), ship speed ( $U$ ), and length between perpendiculars ( $L_{PP}$ ):

  $$F_n = \dfrac{U}{\sqrt{g \cdot L_{PP}}}, \quad R_n = \dfrac{U \cdot L_{PP}}{\nu}$$

  
  
  where $g$ is the gravitational acceleration and $\nu$ is the kinematic viscosity.
• All CFD predicted force coefficients should be reported using the provided ( Geometry page ) wetted surface area at rest ( $S_{0}$ ). Force coefficients are defined as follows:

  $$C_{T} = \dfrac{R_{T}}{\frac{1}{2} \rho U^2 S_{0}}, \quad C_{F} = \dfra... ...1}{2} \rho U^2 S_{0}}, \quad C_{P} = \dfrac{R_{P}}{\frac{1}{2} \rho U^2 S_{0}}$$

  $$C_{F0} = \dfrac{0.075}{(\log_{10} R_{e} - 2 ){}^2}$$ (ITTC 1957 frictional coefficient line )