Hydraulic motors, with related subjects, including centrifugal pumps, pipes, and open channels, designed as a text-book for engineering schools (1905)
Church, Irving Porter, 1851-1931 · New York : J. Wiley & Sons; [etc, ] · leaf 216
a foot-valve being pro-vided at the base of the suction-pipe to prevent a backwardflow before the pump is started, the question arises as to howgreat the speed of rotation must be before any upward flowat all is brought about. In other words, what must be thevelocity, vn, of the tips of the… … Fig. 87c. The DeLaval Impeller. § 108. CENTRIFUGAL PUMPS. 175 delivery-pipes will be at rest, and that in the impeller passageswill rotate with the impeller without travelling either to orfrom the axis. Hence the fluid pressure, pn, between the re-volving water and the stationary water in the upper…
Hydraulic machinery
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