i want to build a cavitation test machine that is in flowing page,and need to more information about it?

Question

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Answer 1

cavitating disk device (or apparatus), n - a flow cavitation test device in which cavitating wakes are produced by holes in, or protuberances on, a disk rotating within a liquid-filled chamber. Erosion test specimens are attached flush with the surface of the disk, at the location where the bubbles are presumed to collapse.

cavitating wake, n - see flow cavitation.

cavitation, n - in fluid mechanics, the formation and subsequent collapse, within a liquid, of cavities or bubbles that contain vapor or gas or both.
Discussion: (1) In general, cavitation originates from a local decrease in hydrostatic pressure in the liquid, produced by motion of the liquid (see flow cavitation) or of a solid boundary (see vibratory cavitation). It is distinguished in this way from boiling which originates from an increase in liquid temperature (2) The term cavitation, by itself, should not be used to denote the damage or erosion of a solid surface that can be caused by it; this effect of cavitation is termed cavitation damage or cavitation erosion. To erode a solid surface, bubbles or cavities must collapse on or near that surface.

cavitation cloud, n - a collection of a large number of cavitation bubbles. The bubbles in a cloud are small, typically less than 1 mm (0.04 in.) in cross section. A surface that is being eroded by cavitation is usually obscured by a cavitation cloud.

cavitation damage, n - see damage.

cavitation erosion, n - progressive loss of original material from a solid surface due to continued exposure to cavitation.

cavitation erosion test, n - a procedure whereby the surface of a solid is subjected to cavitation attack under specified, or measurable, or at least repeatable conditions.
Discussion - Such tests can be divided into two major classes depending on whether flow cavitation or vibratory cavitation is generated.