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Ship Dynamics Laboratory.

Laboratorio Dinámica del buque en la vista en planta

The Ship Dynamic’s laboratory was inaugurated in 1992. It provides the latest technology for wave generation and test instruments and devices for measuring the movements of ships and other floating structures in the presence of waves and wind.

The side wave generator is a multi-flap type and has 60 articulated rigid flaps, 30 meters total width. The hinges are located 2 meters above the bottom of the tank. The flaps are hydraulically driven.

A wave absorber beach is mounted on the opposite side. This consists of stainless steel shavings, piled together to a thickness of 50 cm.


The Towing Tank

The basin is 150 m long, 30 m wide and 5 m deep.

Not far from the wave generator the tank has a square (10x10) sectional pit of 5 m additional depth, thus achieving total depth of 10 m.

Esquema del Canal de Olas

Wave generator

Snake-effect generator.

Types of waves generated:

  • Longitudinal and oblique regular waves of lengths between 1 and 15 m and heights up to 0.9 m. Oblique waves ± 45 º.
  • Long and short-crested irregular waves of significant heights up to 0.4 m.
  • Standard and arbitrary spectra.
  • Capacity to reproduce group spectra.
  • Episodic waves.

Ensayo de un modelo en el canal de olas Montaje de los 60 flaps del  canal de olas

C.P.M.C. (Computerized Planar Motion Carriage)

The CPMC is a set of moving structures above the surface of the tank. It consists of a principal carriage and sub-carriages.
Its basic objective is high-precision reproduction of all possible horizontal movements of a ship or any floating structure at sea.

The principal carriage can be moved uniformly and horizontally along the tank. The three sub-carriages hang below the principle one and are mechanically independent and permit transverse, incremental and rotational motions that are superposed onto the movement of the principle carriage.

The transversal sub-carriage can vary the vertical position of the incremental and rotational sub-carriages, thus adjusting the conditions required for the tests.

The CPMC software, developed in CEHIPAR, automatically controls the movements of the carriages, their positioning, the position of the model, acquisition of data, evaluation of the test runs etc.

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