A textbook on mechanical and electrical engineering (1898)
International Correspondence Schools · Scranton : International Textbook Co., [1898-99] · leaf 416
17. When the upper surfaceof the water remains at the sameheight above the orifice, there is said to be a constanthead. The velocity of efflux varies for different pointsin the orifice; it is greater at the bottom of the orificethan at the top, since the head is greater at the bottom thanat the… … Fig. 181. h = v„ ^g Since the actual velocity is .98 of the theoretical velocity, the actual head is h fe)^ %g V 1.04^. That is, the actual head must be 1.04 times the theoreticalhead due to the mean velocity. Let Q = theoretical number of cubic feet discharged persecond;v^ = theoretical mean…
Electrical engineering · Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
