. Armour engineer. Diagram of Plow of Water in Open Channels, HW Youngberg Diluo~i by H D] Theof the Kwill ther^from tb.^1and subiremembitainty, ain To watert: transfor. ve~: When i 3 V fi TO WOJI TO MAHOAlfl When Jan. 1910] YOUNGBERG: FLOW OF WATER 109 The values of k in the above expressions were determinedfor numerous values of n and r, it being assumed that k variedwith s uniformly between the values s = .00005 and s = .002,which was not in error to a greater extent than the 5% previ-ously mentioned. By laying out the logarithm of r horizontally, the loga-nrithm of — vertically on the left
. Armour engineer. Diagram of Plow of Water in Open Channels, HW Youngberg Diluo~i by H D] Theof the Kwill ther^from tb.^1and subiremembitainty, ain To watert: transfor. ve~: When i 3 V fi TO WOJI TO MAHOAlfl When Jan. 1910] YOUNGBERG: FLOW OF WATER 109 The values of k in the above expressions were determinedfor numerous values of n and r, it being assumed that k variedwith s uniformly between the values s = .00005 and s = .002,which was not in error to a greater extent than the 5% previ-ously mentioned. By laying out the logarithm of r horizontally, the loga-nrithm of — vertically on the left and the logarithm of v^s» kvertically on the right, a 45° line drawn upward to the left nwill give log r + log s — log — which equals logarithm of kthe velocity on a horizontal line. Having two values of kfor each value of r and n, the oblique line varies from 45°, toapproximate the effect of s on the value of c. After a suffi- neient number of points from — had been plotted, a curve was kdrawn and given the corresponding value of n. The table isadjusted so that the same scale reads hydraulic radius andvelocity. The intersection of r with n, and s w
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Keywords: ., bookcentury1900, bookdecade1910, bookidarmourengine, bookyear1910
