EFD Validation Data

General description

The wind generator carriage is another Sanshin-Mori collaboration for expansion of the IIHR - Hydroscience & Engineering capabilities for wind experiments with a towed ship model to increase the surface ship database for two-fluid force and moment, ship motions, and flow measurements for eventual validation of two-phase CFD simulations. The wind generator is a custom design featuring a four-wheel carriage, fan section consisting of eight radial-type fans, vanes, contraction, and exit nozzle. A control rack powers the fans and is used for wind speed adjustments. The carriage is placed between the drive carriage and the PMM carriage. The latter is used to attach a ship model with a superstructure from a 3DOF mount that enables pitch, heave, and roll motions. Tests include forces and moments, ship motions, and 3dpiv measurements in the boundary layer of the superstructure. The model scale, superstructure shape, and wind speeds are designed to create up to 20% air resistance in the total towing resistance budget and significant ship motions.

System specifications

Designed and built: 2006-2007

Installation: August 2007

Tests: Forces and moments and motions on a ship model with a superstructure

Exit area: 500 mm (H) x 2300 mm (W)

Maximum wind speed: 10 m/s

Power: 8 Mitsubishi ET-45ETB fans and FR-F520J-0.4KF inverters

Analog data: Pitch, heave, and roll potentiometers

Software: No software control

Other equipment: Model sting and 3DOF mount for pitch, heave, and roll motions

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