Chapt06

Chapt06

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Extensive discussions of laser velocimetry are given in Refs. 38 and 39. EXAMPLE 6.20 The pitot-static tube of Fig. 6.30 uses mercury as a manometer fluid. When it is placed in a water flow, the manometer height reading is h 8.4 in. Neglecting yaw and other errors, what is the flow velocity V in ft/s? Solution From the two-fluid manometer relation (2.33), with zA h by p0 ps ( M z2, the pressure difference is related to w)h Taking the specific weights of mercury and water from Table 2.1, we have 8.4 p0 ps (846 62.4 lbf/ft3) ft 549 lbf/ft2 12 The density of water is 62.4/32.2 1.94 slugs/ft3. Introducing these values into the pitot-static formula (6.117), we obtain | v v 390 | e-Text Main Menu | Textbook Table of Contents | Study Guide 6.10 Fluid Meters 2(549 lbf/ft2) 1/2 23.8 ft/s 1.94 slugs/ft3 Since this is a low-speed flow, no compressibility correction is needed. V Volume-Flow Measurements 391 Ans. It is often desirable to measure the integrated mass, or volume flow, passing through a duct. Accurate measurement of flow is vital in billing customers for a given amount o...
View Full Document

This note was uploaded on 10/27/2009 for the course MAE 101a taught by Professor Sakar during the Spring '08 term at UCSD.

Ask a homework question - tutors are online