Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 29
11 DISCHARGE OF GAS AND STEAM FROM ORIFICES. space passed over in the time df ; then er, an attempt will be made to deduce the pressure on the other side is p -j- dp ; these by the mechanical theory of heat. If a fluid (water, gas, or steam) flows through an orifice, the velocity of dis- … and the work in the direction of the mo- city has been found and its ratio to the theoretic determined. tion is F p -F-F (p-\-dp=-Fdp. This so-called loss does not consist ac- The volume of the lamina is F d s, and tually of a destruction of work ; but it . F d .9. must be assumed according to the…
Engineering
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