HANNOVER MESSE 2018,
23 - 27 April
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The exploration of the oceans with Autonomous Underwater Vehicle (AUV) and Remotely Operated Vehicle (ROV) is a cost-effective alternative to manned submarines. A reasonable assembly set is the OpenROV, whose shape gives rise to drag optimization. For this purpose, rays were chosen as biological role models and were abstracted into a new hull design in an iterative design process. To further decrease the drag, the effect of an air layer, which is due to the Cassie-Baxter-State, was investigated. Wind tunnel experiments and simulations show a drag reduction up to 50%, compared to the original design. Water tunnel experiments combined with Particle Image Velocimetry (PIV) reveal that the fluid next to the air layer is significantly less decelerated. This results in a reduced velocity gradient in the boundary layer and therefore less energy dissipation caused by friction.
Bionik-Innovations-Centrum, HS Bremen
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24 Apr. 2017, 11:30 AM - 12:10 PM
Prof. Dr. Johanna Wanka
24 Apr. 2017 - 28 Apr. 2017
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