Chapt06

In other words let the hgl at the junction have the

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Unformatted text preview: ook Table of Contents | Study Guide 380 Chapter 6 Viscous Flow in Ducts Reservoir hJ, m 1 2 3 zi 30 30 30 hJ, m fi 10 70 10 Qi, m3/h Vi, m/s 0.0269 0.0241 0.0317 2.42 4.78 1.76 Q This is positive Q, and so we can linearly interpolate to get an accurate guess: hJ Make one final list: Reservoir hJ, m 1 2 3 zi 34.3 34.3 34.3 hJ, m fi 14.3 65.7 05.7 Vi, m/s 0.0268 0.0241 0.0321 2.90 4.63 1.32 43.7 48.6 08.0 12.9 34.3 m. Qi, m3/h 52.4 47.1 06.0 Q 0.7 This is close enough; hence we calculate that the flow rate is 52.4 m3/h toward reservoir 3, balanced by 47.1 m3/h away from reservoir 1 and 6.0 m3/h away from reservoir 3. One further iteration with this problem would give hJ 34.53 m, resulting in Q1 52.8, Q2 47.0, and Q3 5.8 m3/h, so that Q 0 to three-place accuracy. Pedagogically speaking, we would then be exhausted. The ultimate case of a multipipe system is the piping network illustrated in Fig. 6.25. This might represent a water supply system for an apartment or subdivision or even a city. This network is quite complex algebraically...
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