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 198
e the respective depths of the exit,the entrance, and the guide-orifices or water-passages. With gatesfully open (in which case d^ becomes equal to fZ),and neglecting thethickness of the vanes or passage walls, ;,j = 2 r: nl sin a ; a = 2 — nl sin f/>; rj, = 2 — r^d^ sin p. Since, in a reaction… … 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^…
