Scope
| The Emilio Castagneto seakeeping tank is 220 m long, 9 m wide and has a depth of 3.8 m . It is equipped with a single-flap wave generator, that provides regular as well as irregular waves for the investigation of seakeeping characteristics and ride comfort. Tests performed include: – Resistance and self propulsion in waves – 3-D wake surveys – Open water propeller characterisation – Seakeeping and propulsion evaluation in head and following waves – Hydrodynamic forces on profiles, especially of rudders and medium and large sized ship models – Mooring tests – Wave energy converter tests – Offshore wind device tests |
Main characteristics
| Length | 220 m |
| Breadth | 9 m |
| Depth | 3.8 m |
| Description of carriage | motor driven, manual control and automatic, manned |
| Drive system and power | Electric drive system with 8 drive wheels, each coupled to a DC main motor via a reduction gear, and 2 pairs of horizontal guide wheels (only on one rail). Electric main motors (57 kW × 8) |
| Maximum carriage speed | 10.0 m/s (accuracy ±0.15 %) |
| Wave generation capability | Regular waves from 1 to 10 m in length, with corresponding height of 100 to 450 mm (slope 1°÷9°); irregular waves according to any desired sea spectrum condition in appropriate scale |
| Wavemaker type and extent | One-side flap-type, 9 m wide, electro-hydraulically powered with 3 pumps of 38.5 kW total power, controlled by a 100 harmonic components electronic programming device, each harmonic modulated both in amplitude and frequency |
| Beach type and length | 2 crossed layers of square tubular 70 × 70 mm equally spaced, with movable central part for model transit |
| Wind generation capability | For mooring tests an additional structure, carrying wind generators, can be added on the beach of the carriage and oriented on the horizontal plane; air blowing generation system, of 2 rows with 6 fans each, capable of a continuous variation of speed (from 0 to 20 m/s), direction (0°±20°) and vertical gradient |
| Other capabilities | The carriage supports the set up of the 6-component balance for submerged bodies or the Planar Motion Mechanism (PMM) for surface ships and submarines tests up to 5 m/s |
| Instrumentation | Force balance dynamometers; model propeller transmission dynamometers; 5-holes Pitot tube rakes for wake surveys; 1 to 6-component balance for rudders and ship models tests; fully submerged propeller dynamometer (thrust range = ± 400 N, torque range = ± 15 Nm, speed range = 60 to 3000, rpm motor power 5 kW, right and left hand rotation, inclined operation up to ±15° in vertical plane) for open water characterisation of propellers in axial or inclined flow; 3-D optical system and inertial platform for measuring ship model motions in waves; three-components SPIV, t;wo-components LDV measurement systems |
| Model size range | Marine vehicles length: 1.5 m÷8.0 m; turbines diameter: up to 1.5 m |
Contact information
| Scientific point of contact | Luigi Fabbri | +39 06 50299 237 |
| Technical point of contact | Massimo Palini | +39 06 50299 233 |
Location
| Rome HQ | Via di Vallerano 139, 00128, Rome, Italy |