Impact of Jet

CVE3208 | Fluid Mechanics | Lab Report | 2012

Experiment 2 Impact of Jet

CVE3208 Fluid Mechanics

Ahmed Sujeeth I11009050 BCEGI - Semester 4

Lecturer: Dr. Khin Maung Win

19th November 2012

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Ahmed Sujeeth | I11009050 | BCEGI

CVE3208 | Fluid Mechanics | Lab Report | 2012 Title : Impact of Jet To investigate the validity of theoretical expressions for the force exerted by a jet on targets of various shapes. The impact of jet on a surface is a common day engineering application. One such example is the application of this principle on the Pelton wheel where power is generated due to the force of the jet which hits the bucket, which in turn rotates the wheel. Although it has been proven that there is loss of energy due to the …show more content…

The readings were tabulated as shown.

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Ahmed Sujeeth | I11009050 | BCEGI

CVE3208 | Fluid Mechanics | Lab Report | 2012 Data/Results : 1000 liter = 1m3 Flow calculated by using Q = vol / time Nozzle diameter = 0.008m Area = 5.027x10-5 m2 For flat target 90°
Mass on (gm) 50 100 150 200 250 Volume of (l) 5 5 5 5 5 Time (s) 36.11 25.55 19.53 17.97 15.92 Flowrate, Q (m³/s) 1.385E‐04 1.957E‐04 2.560E‐04 2.782E‐04 3.141E‐04 Q² Fy =Mg Fy Ratio (m6/s2) (N) (N) exp to Theoretical Exp theoretical 1.917E‐08 0.491 0.381 0.8 3.830E‐08 0.981 0.762 0.8 6.554E‐08 1.472 1.304 0.9 7.742E‐08 1.962 1.540 0.8 9.864E‐08 2.453 1.962 0.8

For 120° target
Mass on (gm) 50 100 150 200 250 Volume of (l) 5 5 5 5 5 Time (s) 44.47 29.64 25.78 21.88 20.51 Flowrate, Q (m³/s) 1.124E‐04 1.687E‐04 1.939E‐04 2.285E‐04 2.438E‐04 Q² Fy =Mg Fy Ratio (m6/s2) (N) (N) exp to Theoretical Exp theoretical 1.264E‐08 0.491 0.377 0.8 2.846E‐08 0.981 0.849 0.9 3.762E‐08 1.472 1.123 0.8 5.222E‐08 1.962 1.558 0.8 5.943E‐08 2.453 1.773 0.7

For 180° target
Mass on (gm) 50 100 150 200 250 Volume of (l) 5 5 5 5 5 Time (s) 46.5 34.24 29.4 23.85 21.82 Flowrate, Q (m³/s) 1.075E‐04 1.460E‐04 1.701E‐04 2.096E‐04 2.291E‐04 Q² Fy =Mg Fy Ratio (m6/s2) (N) (N) exp to Theoretical Exp theoretical