Solution in example 65 we estimated a head loss hf

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Unformatted text preview: m our formulas: Red 3250 [Eq. (6.54)] or Red 3400 [Eq. (6.55b)] So the flow might have been turbulent, in which case the viscosity of the fluid would have been Vd Red 1.80(3.32)(0.004) 3300 7.2 10 6 slug/(ft s) Ans. This is about 55 percent less than our laminar estimate in Example 6.5. The moral is to keep the capillary-flow Reynolds number below about 1000 to avoid such duplicate solutions. | v v 6.5 Three Types of Pipe-Flow Problems | The Moody chart (Fig. 6.13) can be used to solve almost any problem involving friction losses in long pipe flows. However, many such problems involve considerable iteration and repeated calculations using the chart because the standard Moody chart is essentially a head-loss chart. One is supposed to know all other variables, compute e-Text Main Menu | Textbook Table of Contents | Study Guide 352 Chapter 6 Viscous Flow in Ducts Red, enter the chart, find f, and hence compute hf. This is one of three fundamental problems which are commonly encountered in pipe-flow calculations:...
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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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