Mechanical laboratory methods; a testing of instruments and machines in the mechanical engineering laboratory and in practice (1918)
Smallwood, Julian Chase · New York, D. Van Nostrand company · leaf 129
tions a and h. Thus, if V and y are the velocities in feet per second, and H and h thepressures in feet of waterat the sections a and 6,respectively, and W theweight of water passingper second, then g being the acceleration of gravity. Wealso have the relation 7 _ Area at b_ dPV Area at a D^… … Fig. 61.—Venturi Meter. from which the cubic feet per second discharged under idealconditions is Q = area X velocity Owing to friction losses the discharge thus calculated is too high.To allow for this, a coefficient of discharge, C, less than unity,is introduced. Combining V 2^ and 0.7854, for…
Mechanical engineering laboratories
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