Question

19. Two cross sections, A and B, are 7.0 km apart along a 0.90-m-diameter commercial steel pipe in its best condition. A is 83.5 m higher than B. If the water temperature is 20°C and the pressure heads measured at A and B are 12.3 m and 88.7 m, respectively, what is the flow rate from A to B? Assume minor losses are negligible. Answer: Q=0.76 m/s.

please solve problem in detail including needed FBD

Answer 1

wb.ozp 7000 m Given length of pipe la 7000 m dia of pipe dao.am ZA-7B = 83.5 m pressure heade PA = 12.3m o=88.7m es velocity v. i constant throughout the cronechan Apply bernoullia equation at crorechone A and B + P + V + +beth 2th eg 29 62 VAEV ..: 19:3 + + + = 39; } +flv } 290 12.3+33.5 88:7 + *7000* 249.810-9 zo for a 0.0179 - Sev = 0.1338 - даа соlе bл оо ч equahm L + 2.51 = -0.86an Rest Resude (ce nat 2017 0.00060

por commercial steel pipes - 5 6 6 5 ๓๑z S + 02S X 10 - - - 0 6 In 10210 - 4 2 5 | Qob 666 ง 3 33 X - 4 0 % ง 36 = 0 (38 ร จ. U + เSo 1A\S L- S 3 Xia 6 : : 1.แจม - 6-8 แกว 50 31 1 2 0 59 มง) 1,313 3 - 0 - 86 3.ผจรป 2 - 0 แ ก ( 29 1 = 102 m/s - " discharge Q = av 2 1 1 6-9 x 1.2 2 0 3 4 5 6