Accession Number : AD0464806


Title :   Intensity of Cavitation Damage Encountered in Filed Installations


Descriptive Note : Research technical rept.,


Corporate Author : HYDRONAUTICS INC LAUREL MD


Personal Author(s) : Thiruvengadam, A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/464806.pdf


Report Date : Feb 1965


Pagination or Media Count : 45


Abstract : A nomogram called Cavitation Damage Intensity Estimator is presented for estimating cavitation damage intensities of field installations. This simple approach is based on an earlier definition of cavitation damage intensity as the power absorbed per unit area of the eroded material. Using this estimator and the data published for field installations, the damage intensity is estimated for ships' appendages, ships' propellers, valves, Diesel engine cylinder liners, hydraulic turbine runners and pumps. These estimates show that the intensities for propellers and valves can be several orders of magnitude higher than that for laboratory test devices. A summarized analysis shows the field experience and laboratory experience in the proper perspective in terms of their intensities. The possible usefulness of various protection methods are projected for various intensity levels. The threshold intensity of cavitation damage is found to be proportional to the endurance limit of metals. These ideas are only preliminary in nature and further coordinated field and laboratory efforts are suggested in this direction.


Descriptors :   *HYDRODYNAMICS , *STRUCTURAL COMPONENTS , METALS , DIESEL ENGINES , DAMAGE , INTENSITY , HYDRAULIC EQUIPMENT , CAVITATION , NOMOGRAPHS , PROTECTIVE TREATMENTS , COMBUSTION CHAMBER LINERS , HYDRAULIC PRESSURE PUMPS , MARINE PROPELLERS , EROSION , TURBINES , VALVES


Subject Categories : Structural Engineering and Building Technology
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE