Instructions to participants

- Summary
- Overview of cases
- Detailed Overview of cases
- Case 1.1: KVLCC2 Deep water, forces & moments
- Case 1.2: KVLCC2 Deep water, trajectories
- Case 2.1: KVLCC2 shallow water, forces & moments
- Case 2.2: KVLCC2 shallow water, trajectories
- Case 3.1: KCS Deep water, forces & moments
- Case 3.2: KCS Deep water, trajectories
- Case 3.3: KCS Waves, trajectories
- Case 4.1: KCS shallow water, forces & moments
- Case 4.2: KCS shallow water, trajectories
- Case 5.1: ONRT, forces & moments
- Case 5.2: ONRT, trajectories
- Case 5.3: ONRT Waves, trajectories

Case 2.1: KVLCC2 shallow water, forces & moments

- KVLCC2 hull shape
- Fixed in surge, sway, roll and yaw. Upright condition (Ø=0). The experimental results are obtained free to trim and sink
- Calm water
- Water depth to draught ratio 1.2 (i.e. 20% under keel clearance when the ship is at rest)
- L
_{PP}= 7.00 m (scale 45.714) - V
_{model}=0.426 m/s, Fn = 0.0514 (corresponding to full scale 5.6 knots) - g = 9.81 [m/s
^{2}], ρ=1000 [kg/m^{3}]; ν=1.27×10^{-6}[m^{2}/s] - Propeller present. The propeller should work at the propeller point so that there is self propulsion at V
_{model}=0.532 m/s, Fn = 0.0643 (corresponding to full scale 7.0 knots), in shallow water at zero drift and zero yaw rate (and rudder). - Rudder present, but at zero rudder angle (exactly zero).

Reference: E. Milanov. APPENDED KVLCC2 PMM tests in shallow water

- You can only submit case 2.1.2 when you delivered case 2.1.1
- You can only deliver case 2.1.2 package 2 when you deliver case 2.1.2 package 1.
- You can only deliver case 2.1.2 package 3 when you deliver case 2.1.2 package 2.

- The N-moment (moment around the z-axis) should be supplied w.r.t. the midship.
- Only the hydrodynamic forces are to be supplied: the inertial forces are not to be included.
- Forces and moments are to be given non-dimensional:

Package | Drift angle (β=-atan(v/u) |
Non-dimensional rate of turn r’ | Requested quantities |
---|---|---|---|

Case 2.1.1 | 10° | 0 | X’, Y’, N’ |

8° | 0 | X’, Y’, N’ | |

6° | 0 | X’, Y’, N’ | |

4° | 0 | X’, Y’, N’ | |

2° | 0 | X’, Y’, N’ | |

0° | 0 | X’, Y’, N’ | |

-2° | 0 | X’, Y’, N’ | |

-4° | 0 | X’, Y’, N’ | |

Case 2.1.2, package 1 | 0° | 0.1 | X’, Y’, N’ |

0° | 0.2 | X’, Y’, N’ | |

0° | 0.3 | X’, Y’, N’ | |

Case 2.1.2, package 2 | 4° | 0.1 | X’, Y’, N’ |

4° | 0.2 | X’, Y’, N’ | |

4° | 0.3 | X’, Y’, N’ | |

Case 2.1.2, package 3 | -4° | 0.1 | X’, Y’, N’ |

-4° | 0.2 | X’, Y’, N’ | |

-4° | 0.3 | X’, Y’, N’ |

The yellow fields in the excel sheet should be filled in. The excel sheet should be send to the organizing committee per email address “simman2019host@gmail.com”.

Table below gives an example of the data that we would be getting for the KVLCC2 for case 2.1.1 and 2.1.2. Submitters should generate an excel sheet in the format of the Table below. The submitter has to type the calculated X’, Y’ and N’ ..

The table below gives the results for the KCS in upright condition (Ø=0). The speed is 19.9 knots, the rudder angles remain zero. The N-moment is to be calculated w.r.t. midship. The K-moment is to be calculated w.r.t. the still water waterline. The forces and moments for this case (KCS measured by JMU) should include the rudder at zero angle, but no propeller.

Comparison of submission 1 to the experimental data for KVLCC2 in shallow water for pure drift (case 2.1.1)

Comparison of submission 1 to the experimental data for KVLCC2 in shallow water for pure yaw and yaw and drift (case 2.1.2)

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