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US 2023/0397580 A1Published application
Cavitation barrier for aquatic species
OwnerEdem TSIKATAinventor
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Abstract
Embodiments of the present invention provide a novel deterrent barrier based on the phenomenon of fluid cavitation. A drive unit comprising a motor and a propeller are configured for inducing cavitation in water. The cavitation takes the form of a rotationally confined vertical column of cavitation bubbles extending from the propeller, and a one-dimensional series of drive units spanning the width of a waterway may provide an effective, environmentally friendly and non-lethal barrier against entry of target fish species.
Claims13
-19. (canceled)
A method of selectively deterring migration of a target aquatic species along a waterway, the method comprising:
- providing one or more cavitation-producing drive units underwater in the waterway, each drive unit including a propeller;
- and
- operating at least one said drive unit to directly induce cavitation in water, the propeller of each said drive unit being configured to produce, from the water itself, a spiral, rotationally confined vertical column of cavitation vapor bubbles extending from the drive unit, the cavitation bubbles repelling the target aquatic species.
Dependencies are inferred from the claim text.