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Hydromechanics Laboratory
Hydromechanics lab

Facilities

Coastal Engineering Tank

This facility is used mainly for ocean engineering lab classes and research projects that focus on shallow water waves and the effects of wave action on coastlines and coastal structures. The main tank is currently subdivided into three sections:

1) Rectangular basin – 50 ft x 23 ft (15 m x 7.0 m) with piston      wavemaker
2) Sediment tank – 35 ft x 3.3 ft (10.7 m x 1.0 m) with vertical wedge      wavemaker
3) Circular basin – 18 ft (5.5 m) diameter tank

A portable channel 20 ft long and 2 ft wide (6.1 m x 0.61m) has a variable slope floor and is installed in the rectangular basin to study shoaling waves and surf run up.

Breakwaters, jetties, groins, and harbors can be designed, and their effectiveness evaluated in all of the tanks. A large moveable bridge spans the main tank area and is used as an observation platform and as a movable foundation for mounting instrumentation.

Depth of Water = 0 to 2 ft

WAVE GENERATION CAPABILITY:

Regular, irregular waves, wave frequency range: Rectangular tank 0.2 to 1.5 Hz;
Sediment tank 0.4 to 1.5 Hz

WAVEMAKER TYPE:

Rectangular basin – Horizontal travel piston with servo-hydraulic control
Sediment tank – Vertical travel wedge with electric servo motor balls crew drive

BEACH TYPE AND LENGTH:

Permeable vertical sheets; 5 sheets, 4’ long (1.2m)

INSTRUMENTATION:

Same used in 380’ tank
The coastal lab is also outfitted with equipment for studying soil mechanics as applied to coastal sediments, and with a variety of field survey and bathymetry equipment.

TESTS PERFORMED:

Measurement of wave breaking, wave runup, wave transmission past coastal structures, forces on marine structures, sediment transport, harbor flow modeling

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