THERMAL SCIENCE LAB
THERMAL SCIENCE LAB ME 4621
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This 4 page Class Notes was uploaded by Dolly Koepp on Tuesday October 13, 2015. The Class Notes belongs to ME 4621 at Louisiana State University taught by R. Devireddy in Fall. Since its upload, it has received 21 views. For similar materials see /class/222914/me-4621-louisiana-state-university in Mechanical Engineering at Louisiana State University.
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Date Created: 10/13/15
APPENDIX 1 SAMPLE PLANNING FORM DATE Sept 1 1910 SECTION 1 GROUP A EXPERIMENT NUMBERTITLE 1Boundarv Laver Velocitv Profiles GROUP MEMBERSTASKS Ludwig Prandtl 1 Leader Osborne Reynolds 2 Theodore von Karman 3 Geoffrey Taylor 4 BRIEF STATEMENT OF OBJECTIVE Determine the velocitv profiles within a flatplate boundarv laver at different distances downstream of the leadinq edqe TEST APPARATUS Subsonic Wind Tunnel Flat Plate Traversing Mechanism MEASURED QUANTITIES Static P and Staqnation Pressure Po Temgerature T Velocity V Calculated INSTRUM ENTATION Pitot tube rack Multigle tube manometer Thermometer Pitot static tube SKETCH OF APPARATUS AND lNSTRUMENTATlON SETUP Wigwam5 mun 7 qu unwran 2 9w m7lt mas STEP BY STEP LABORATORY PROCEDURE Set u e eriment and e ui ment as shown in sketch 2 Set wind tunnel speed at 50 ftsec 3 Place Pitotrstatic tube halfrway between at plate and Ceiling does not Change with this small change in position 4 Record multirtube manometer levels and temperature 5 Move rack Closer to leading edge by1cm and repeat step 4 DATA REDUCTION Find density of air from the temperature readinq Convert manometer levels into pressure Find dynamic pressures corresponding to each racktube and the pitotstatic tube subtract static pressures from Pitot tube stagnation Pressure39 Find velocities from Bernoulli39s eguation UNCERTAINTYANALYSIS d ldPP2dTTZl 2dPPldhh2d m mm dVNO51PPo1dP0P02PP02dPP21PPo2d 211 2 h manometer level m manometer fluid densitv air densitv