Chapt06

# 2 ft3s 1 4 122 ft2 917 fts now list and sum the minor

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Unformatted text preview: between these rules and the rules for handling electric circuits is not coincidental. Figure 6.24 shows three examples of multiple-pipe systems. The first is a set of three (or more) pipes in series. Rule 1 is that the flow rate is the same in all pipes Q1 V1d 2 1 or Q2 Q3 const 2 V2d 2 2 V3d 3 (6.105) Rule 2 is that the total head loss through the system equals the sum of the head loss in each pipe hA→B h1 h2 h3 (6.106) In terms of the friction and minor losses in each pipe, we could rewrite this as 8 | v v This section may be omitted without loss of continuity. | e-Text Main Menu | Textbook Table of Contents | Study Guide 376 Chapter 6 Viscous Flow in Ducts 3 2 1 B A (a) 1 2 B A 3 (b) z2 HGL z1 HGL zJ + pJ ρg z3 HGL 2 Fig. 6.24 Examples of multiplepipe systems: (a) pipes in series; (b) pipes in parallel; (c) the threereservoir junction problem. 3 1 (c) hA→B 2 V 1 f1L1 2g d1 K1 V 2 f3L3 3 2g d3 2 V2 2g f2L2 d2 K2 K3 (6.107) and so on for any number of pipes in the series. Since V2 and V3 are proportional to V1 from Eq. (6.105), Eq. (6.107) is of the form hA→B 2 V1 ( 2g 0 1 f1 2 f2 3 f3) (6.108) where the i are dimensionless const...
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## This note was uploaded on 10/27/2009 for the course MAE 101a taught by Professor Sakar during the Spring '08 term at UCSD.

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