Practical Hydraulics: A Series of Rules and Tables for the Use of EngineersSpon, 1905 - 80 páginas |
Termos e frases comuns
100 gallons 3000 yards long 8-inch pipe 80 feet head aperture channel Coef cubic feet culverts depth discharged per minute due to friction due to velocity feet per minute feet per second following rule foot FRICTION OF LONG gallons discharged gallons per minute given head gradient head at disposal head due head for friction head for velocity HEAD OF WATER height of jet hydraulic radius HYDRAULIC TABLE 3-continued inches diameter inches head Inches of Mercury inches per mile Jet in Feet LONG PIPES loss of head maximum mean velocity nozzle number of gallons parabola PIPE IN INCHES pressure Prony's rule proportions pump ratio require the discharge rules and Table say we require Space Velocity square feet Square Inch Table 15 Table 30 tank thickness total head true discharge trumpet-mouth velocity at entry Velocity in Feet velocity of discharge WATER IN FEET weir Witley Court وو
Passagens mais conhecidas
Página 1 - Velocity of Efflux." — The velocity with which water issues from the side of a vessel, as at A, Fig. 1, is the same as that of a body falling freely by gravity from the height H, or the distance from the centre of the orifice to the surface of the water. This velocity is given by the rule : — V...
Página 6 - In these rules d = diameter of the pipe in inches. L = length in yards. H = head of water in feet. G = gallons per minute. These rules require the use of logarithms to work them easily : thus, to find the discharge by a 7-inch pipe 3797 yards long with 45 feet head, we have : — 7 x 3 = 21 = 1-322219 5 6-611095 X 45 = 1-653213 8-264308 4-3797= 3-579441 2)4-684867 2-342433 = 220 gallons per minute.
Página 16 - Divide the head of water in feet by the given length in yards, and the nearest number thereto in the table under the diameter will be found opposite the required number of gallons. To FIND THE LENGTH, WHEN THE HEAD, NUMBER OF GALLONS PER MINUTE, AND DIAMETER OF PIPE, ARE KNOWN.
Página 19 - The discharge by any pipe, or series of pipes, is proportional to the square root of the head;" and conversely, " The head is proportional to the square of the discharge ; " and these laws are true in pipes with bends, jets, contractions, &c. Thus, say we require the discharge of a 12-inch pipe 5 yards long with 10 feet head. Assume a discharge, it is unimportant whether the assumed discharge is near the true quantity or not, or whether it is too much or too little.