Hydraulic engineering; a practical treatise on the principles of water pressure and flow and their application to the development of water power, including the calculation, design and construction of water wheels, turbines, and other details of hydraulic power plants (1909)
American School (Chicago, Ill.), Black, Adolph, Turneaure, Frederick Eugene, 1866- · Chicago American School of Correspondence · leaf 199
110 WATER-POWER DEVEL0P:\IEXT maximum efficiency the water must enter tangentially to the vanes,and the absolute velocity of tlie water atdischarge must be as low as pos-sible—will be fulfilled for the first case, when u and v^ are proportionalto the sines of their opposite angles—that is, when y^… … Fig. 77. Turbine Notation. Sid)stituting ii^ for T^^ in the thirfl member of Equation 102/>,ande(juating it to the first, there results: w, rd sin a Vq r^di sin P11 T Then, smce — — —, the above ((tuation may be reduced to:11 r I .. u r^d sin f\ v„ r^d^ sin P (103a) From the trigon(jmetric…
