28 for this case of 8 to 9 percent blockage both the

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Unformatted text preview: 0.7 0 4 3.5 0.69 0.68 AR 3 0.66 0.64 20° 2 0.62 18° 0.60 16° 1.75 14° 12° 10° 8° 4 Fig. 6.28a Typical performance maps for flat-wall and conical diffusers at similar operating conditions: (a) flat wall. (From Ref. 14, by permission of Creare, Inc.) 5 2θ = 4° 6° 6 7 89 L W1 10 12 14 16 18 20 Almost all practical fluids engineering problems are associated with the need for an accurate flow measurement. There is a need to measure local properties (velocity, pressure, temperature, density, viscosity, turbulent intensity), integrated properties (mass flow and volume flow), and global properties (visualization of the entire flow field). We shall concentrate in this section on velocity and volume-flow measurements. We have discussed pressure measurement in Sec. 2.10. Measurement of other thermodynamic properties, such as density, temperature, and viscosity, is beyond the scope of this text and is treated in specialized books such as Refs. 22 and 23. Global visualization techniques were discussed in Sec. 1.7...
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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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