Wetted Surface
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Wetted Surface

The surface area that interacts with the working fluid or gas.

In maritime use, the wetted area is the area of the hull (watercraft) which is immersed in water.

In aeronautics, the wetted area is the area which is in contact with the external airflow. This has a direct relationship on the overall aerodynamic drag of the aircraft. See also Wetted aspect ratio.


  • Intake Aerodynamics (October 1999) by Seddon and Goldsmith, Blackwell Science and the AIAA Educational Series; 2nd edition

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