Test Facilities

Deep Water Basin | Shallow Water Tank | Wave FlumeInstrumentation

Deep Water Basin (BGO FIRST)

 

Basin dimensions

Length40m
Width16m
Water depth0 to 5m
Central pit5m dia. @10m wd

Swell

Typeregular or irregular (all types of spectrum), mono or multi-directional
Max. height0.8m (peak to trough)
Periods0.6 to 4s

Current

Directioncollinear to swell or opposite
Max. speeddepending on the depth. Up to 1.2m/s @1m wd

Wind

Max. speed5 m/s
Direction0 to 360°

Towing Platform

Longitudinal speed1.2 m/s
Transversal speed1.2 m/s
Otherthe command of the 2 axes of the platform allows for any trajectory or harmonic motions

Other equipment

Equipment restricting basin section to increase the current velocity
Forced motions device to impose 6 degrees of freedom (hexapod)
Dynamic Positioning System

Features

  • Compact configuration of the basin to run the tests with accuracy, speed and flexibility.
  • Adjustable floor in depth (0-5 m) and angle (+/- 4 °)
  • Simultaneous generation of wave, current and wind.
  • Ability to perform tests in shallow or deep water.
  • Modern computer and metrological equipment
  • Expertise in experimental hydrodynamics in association with university researchers.

Applications

  • Oil and gas marine engineering
  • Marine engineering for the production of renewable energy
  • Coastal engineering
  • Naval Engineering (vessels at fixed point or operating at low speeds)
  • R&D

Shallow Water Tank

 

Objectives

This tank is a shallow water basin designed mainly for physical model testing of coastal structures. These tests verify the stability of these structures in a given marine environment, and assess their performance in terms of protection, stability, overtopping, reflection, transmission or environmental impact in view of a possible optimization of the project.

Technical Characteristics

Tank Dimensions
Length 27m
Witdh 12m
Water Depth 0 to 1m
Swell
Type regular or irregular (all types of spectrum), mono-directional
Max. Height 0.5m (peak to trough)
Periods 0.6 to 3s
Tank Floor
Movable floor to model site bathymetry

Features

  • Compact configuration for performing the tests with accuracy, speed and flexibility.
  • Modern computer and metrological equipment.
  • Expertise in experimental hydrodynamics in association with university researchers.

Applications

  • Projects of industrial ports or marinas, waterfront development...
  • Studies of protection against erosion or against marine submersion

Wave Flume

 

Objectives

The wave flume is a facility mainly designed for physical model testing of coastal structures. These tests verify the stability of one or more sections (2D) of these works in a particular marine environment, and evaluate them in terms of protection performance, stability, reflection or transmission in order to optimize the project. They are usually followed by a wave tank tests campaign for taking into account possible three dimensional effects (3D). They can also be used in other areas, such as developments in deepwater to perform preliminary inexpensive tests.

Technical Characteristics

Dimensions
Length 24m
Width 1m
Water Depth 0 to 1.5m
Swell
Type regular or irregular (all types of spectrum), mono-directional
Max. height 0.5m (peak to trough)
Periods 0.6 to 3s
Floor
Movable floor to model site bathymetry.
Side Windows
Type rectangular (laminated glass)
Width 1.20m
Height 1.00m

Features

  • Compact configuration for performing the tests with accuracy, speed and flexibility.
  • Modern computer and metrological equipment.
  • Expertise in experimental hydrodynamics in association with university researchers.

Applications

  • Projects of industrial ports and marinas, waterfront development...
  • Studies of protection against erosion or against marine submersion
  • And more generally all development project at sea (coastal development, offshore, renewable energy converter ...) requiring inexpensive preliminary tests

Instrumentation

Acquisition System
Number of measurement channels 96 (extendable)
CAD 16 bits
Sampling frequency up to 100 kHz
6 DOF motions real time contactless tracking
Aerial systems (Krypton)
Submarine system (Qualisys)
1 DOF motion measurement
Inductive sensors
LVDT
wire type
Multi-axis force measurement
loads or moments 2 axes sensors
force balances 3 or 6 axes
1 axis force measurement
strain gauge sensors (bending, compression / tension)
piezoelectric sensors (compression / tension)
Pressure measurement
strain gauge sensors for low frequency applications
piezoelectric sensors for measuring high frequency phenomena
Water elevation measurement
wide range of resistive and capacitive wave gages
Acceleration measurement (acceleration can also be derived from the motions with high accuracy)
1 DOF sensors
3 DOF sensors
Current measurements
propeller type
electromagnetic type
turbulence measurements by hot film or laser velocimetry (rent equipment)
Wind measurements
hot film anemometer
Video recording
aerial, underwater and fast (200Hz) cameras.

Specific instrumentation

When the standard instrumentation is not suitable, Oceanide can:

  • Design, fabricate and qualify specific assemblies including several standard sensors to perform complex measurement
  • Design and qualify new specific sensors and sub-contract their fabrication to one of the large number of Oceanide' suppliers