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Unformatted text preview: ft elevation difference? w h3 U-tube manometer m P6.139
1 ft 2 in Mercury P6.137 | v v P6.138 An engineer who took college fluid mechanics on a passfail basis has placed the static pressure hole far upstream
of the stagnation probe, as in Fig. P6.138, thus contaminating the pitot measurement ridiculously with pipe friction losses. If the pipe flow is air at 20°C and 1 atm and
the manometer fluid is Meriam red oil (SG 0.827), estimate the air centerline velocity for the given manometer
reading of 16 cm. Assume a smooth-walled tube.
P6.139 Professor Walter Tunnel needs to measure the flow velocity in a water tunnel. Due to budgetary restrictions, he cannot afford a pitot-static probe, but instead inserts a total | e-Text Main Menu | head probe and a static pressure probe, as shown in Fig.
P6.139, a distance h1 apart from each other. Both probes
are in the main free stream of the water tunnel, unaffected
by the thin boundary layers on the sidewalls. The two
probes are connected as shown to a U...
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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.
- Spring '08