Chapt10

8 0456 10 0452 h1 flow 12 slope p10122 the crump weir

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Unformatted text preview: h half-angle ? P10.121 Water flow in a rectangular channel is to be metered by a thin-plate weir with side contractions, as in Table 10.1b, with L 6 ft and Y 1 ft. It is desired to measure flow rates between 1500 and 3000 gal/min with only a 6-in change in upstream water depth. What is the most appropriate length for the weir width b? | e-Text Main Menu | Q where f Qmod f 1.035 0.817 H* 2 H* 1 4 0.0647 for 0.70 H*/H* 0.93, where H* denotes H1 2 1 V 2/(2g) kh for brevity. The weir is then double-gaged 1 to measure both H1 and H2. Suppose that the weir crest is 1 m high and 2 m wide. If the measured upstream and downstream water depths are 2.0 and 1.9 m, respectively, estimate the flow rate in gal/min. Comment on the possible uncertainty of your estimate. Textbook Table of Contents | Study Guide 706 Chapter 10 Open-Channel Flow P10.124 Water flows at 600 ft3/s in a rectangular channel 22 ft wide with n 0.024 and a slope of 0.1°. A dam increases the EES depth to 15 ft, as in Fig. P10.124...
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