Abstract:
A new method, which is called image manipulation, is introduced
to analyze the cavitation of flow field for the first time. As
the complexity of the cavitation development must be
considering, only the method of image manipulation can calculate
the strength of the cavitation more accurately. This method based
on wavelet transform is used to eliminate the noise. The area of
the cavitations is deduced to serve as the strength of
cavitation. The method is applied in an example of inducer's
rotating cavitation. The results show that using image
manipulation can get the accurate date of cavitation with ease,
and the reason of the inducer shaft's vibration is uncovered
clearly.
Key words: Image manipulation Cavitation Flow
field Wavelet transform
Manuscript received on
June 2, 2000; revised manuscript October 8, 2000
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