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
e shown carries a certainamount of energy in the form of pressure and velocity. Whenthe water reaches the contracted section 6, its velocity is increased,and therefore its pressure must be decreased, since the totalenergy, barring losses, remains constant. The drop in pressurebetween sections a and… … 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^…
Mechanical engineering laboratories
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