Koofer(1) - LAB #8: DRAG MEASUREMENTS DATA & ANA LY...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

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

Unformatted text preview: LAB #8: DRAG MEASUREMENTS DATA & ANA LY S IS Table 1: Fluid Properties ho h BOX P AlM 40 31.7 100 27.5 23 1. 17 997.09 em em kPa T AlA C C kgl m"3 kgl m"3 TWATE R P AIR PWATE A VWAT EA 9 . 12E -007 m"21s Table 2: Pressure Distribution Around Cylinder Data e (degrees) hen (em) Ce C/cos8 Cp (Eqn 14) 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 100 11 0 120 130 140 150 160 170 180 32.0 32.2 32.5 33.5 34 .7 36.3 38.2 4 0.6 42.8 45. 1 4 7.7 4 9.3 50 .4 5 1. 6 52. 1 5 1. 8 5 1. 0 50 .4 50.3 50.3 50 .4 50.5 50.7 50.9 5 1. 0 5 1.1 5 1. 0 5 1. 0 e (radians) 0 .0 0 .1 0 .2 0 .3 0 .3 0 .4 0 .5 0 .6 0 .7 0 .8 0 .9 1.0 1.0 1.1 1. 2 1.3 1.4 1. 5 1. 6 1.7 1. 9 2 .1 2 .3 2 .4 2 .6 2 .8 3 .0 3 .1 -' :: :: = - :, :: -!' -~ ; ~l ~~: -;: :: :: ~~: It ,. -; . -,t, -, t. :: :: ~: ~~ - lit " :: ... ,. ~ -: ! . Table 3: Direct Drag Force Measurements Mass (9) Fo (N) hsox (em) ho (em) 1/2*pU 2 52 40 30 20 10 3 1. 5 34 .2 36.3 38.5 40.7 39 .7 40 .5 4 1.1 4 1. 7 42 .3 1 10 '- .. , . .~ Fo/A Re 1 1 ,.- ::: .... Pressure Coefficient, Cp vs. Cylinder Angle, 8 1tl _ 0.5 ~ "\. ~ 1 ". 0 1 ~ ~-"' , I '" OJ '" C -0.5 w c OJ 0 -1 0 E ~ - 1.5 c. -2 '\ , . . Measured Data -2.5 I .... , ~ . - , L " ' Ideal ~ I o 20 40 60 80 100 120 140 160 180 9 (degrees) 1.5 ,--,- - - - - - - - - ' - - - - - - - - - ' - - - ' - - - - - ' - - - - - - - - = - - - - - - - - - , Cd = 1.2965 (numerical methods - MATLAB) Pressure Coefficient, Cp*cos(8) vs. Cylinder Angle, 8 1 en en Q) c .Q en c Q) ~ 0.5 E ""0 ~ ~ <D 0 ~ en U 0- () 0 , -0.5 I \. __'---------------------~ ... Measured Data -1 +1---,---,---,---,---,----,----,-----,--~ o 20 40 60 80 100 120 140 160 180 9 (degrees) Drag Force, Fd/A vs. Dynamic Pressure, 1/2*pUII2 900 800 700 600 500 ~ Cd = 1.06 (pressure distribution) / /'(X) / 200 / = / 1.06x - 5.75 ~ E Z ~ 400 300 200 100 i'C / / / o 100 300 400 500 600 700 800 900 1/2* pU'2 (Nlm'2) CONCLUSION ...
View Full Document

Page1 / 6

Koofer(1) - LAB #8: DRAG MEASUREMENTS DATA &amp;amp; ANA LY...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online