When a ship enters a lock waves are generated, the return flow velocity increases, the speed of the ship reduces and the keel clearance alters. The wave heights and ship speeds are calculated in the paper for the period during in which the bow and the stern pass the lock entrance. The wave heights are calculated using one-dimensional equations of water movement. The return flow velocity increases strongly in the narrowing between the ship and the lock resulting in large outflow losses into the channel. The ship speed is calculated from the equilibrium of forces on the ship. The wave forces on the ship are determined by the water level in front of the bow. The calculated results have been compared with model and prototype measurements and shows good agreement.
Calculations of Wave Height and Ship Speed When Entering a Lock
1988
24 pages
Report
Keine Angabe
Englisch
Marine Engineering , Dynamic Oceanography , Civil Engineering , Missile Launching & Support Systems , Ocean waves , Ships , Locks(Waterways) , Navigation , Height , Velocity , Mathematical models , One dimensional flow , Comparison , Prototypes , Force , Foreign technology , Water levels , Return flow
Ship lock entering and exiting guiding device and guiding method thereof
Europäisches Patentamt | 2023
|Calculation of Hydrodynamic Interaction Forces on a Ship Entering a Lock Using CFD
HENRY – Bundesanstalt für Wasserbau (BAW) | 2016
|Ship-Borne Wave Height Measurements
Online Contents | 1997
|