Cavitation_photographs

Cavitation_photographs - Examples of Cavitation and...

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Examples of Cavitation and Cavitation Damage Photographs supplied by David R. Stinebring, Eric G. Paterson, and William A. Straka Penn State Applied Research Laboratory Cavitation occurs in regions of the flow where the local pressure is low enough that liquid evaporates into vapor pockets called cavities – hence the name cavitation . For example, cavitation often occurs in the wake of a spinning propeller, especially near the tips of the propeller – the velocity is very high and the pressure is very low in these so-called tip vortices in the wake of the propeller, and cavitation occurs here, as illustrated in the classic figure below. Since the water is also flowing from left to right while the propeller blades are spinning, the cavitation bubbles form a helical pattern. Photograph of ARL Garfield Thomas Water Tunnel tests showing propeller tip vortices.
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An interesting phenomenon was observed with the cavitating tip vortices trailing downstream from a set of counter-rotating propellers.
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  • Fall '05
  • CIMBALA
  • Computational fluid dynamics, Propeller, cavitation, CAVITATION DAMAGE, rudder cavitation damage, ARL Garfield Thomas Water Tunnel

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Cavitation_photographs - Examples of Cavitation and...

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