Hydraulic Manual Consisting of Working Tables And Explanatory Text Intended As a
The book Hydraulic Manual Consisting of Working Tables And Explanatory Text Intended As a was written by author Lowis Daguilar Jackson Here you can read free online of Hydraulic Manual Consisting of Working Tables And Explanatory Text Intended As a book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Hydraulic Manual Consisting of Working Tables And Explanatory Text Intended As a a good or bad book?
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3rd. By measuring by means of the current-tube the velocities at a great number of points in the transverse section of the channel, and comparing the discharge cal- culated from these velocities with that determined by the experiments previously described ; the points referred to were distributed rectangularly in vertical and horizontal lines ; the discharge of each rectangle was calculated, and the sum of these discharges was employed to obtain an approximate discharge of the canal. These comp...arisons gave results varying from 0*968 to I '029 as extremes, the general mean of all being 0*993. The mean of the means obtained by the first and third methods gave a coefficient of nearly unity, which was therefore adopted for the instrument under trial. Having thus securely determined the amount of dis- charge passing down the canal of experiment at any time, the levels of the water surface and its inclination 174 ON FIELD OPERATIONS AND GAUGING. CHAP. N. being attainable also at any time with exactitude, the sectional area at any point being also known, and the coefficient of reduction for the current-tube being deter- mined so exactly that any velocity observed by means of it was absolutely correct, the experiments for obtain- ing coefficients of discharge under different conditions, and for obtaining the ratio of the maximum velocity in a section to that of the mean velocity of discharge in open channels were undertaken.
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