Apparatus for measuring the concentration of cavitation nuclei in a liquid
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United States of America Patent
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Feb 24, 1987
Grant Date -
N/A
app pub date -
Dec 10, 1985
filing date -
Dec 10, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In hydrodynamic testing, in particular in laboratory testing of propellers, it is necessary to measure the concentration of cavitation nulcei in a liquid. The measurement is performed by counting bubbles of vapor formed by the cavitation nuclei in a zone (C) having minimum cross-section and pressure (Pt) in a forced flow along a duct. A deflector core (18) is disposed on the axis of a diverging downstream portion (C) of said duct in order to avoid the liquid streamlines from becoming detached and to facilitate bubble counting.
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