Thermodynamics and fluids mechanics - Lab Report Example

The corresponding force F, can be found by taking the moment about the pivot of the jockey. The distance y, is the position of the jockey. Momentum was found by multiplying Mass Flow Rate by the Velocity of the vane. As before, the corresponding force F, was found by taking the moment about the pivot of the jockey. The distance y, represents the position of the jockey. Similarly, Momentum = Mass Flow Rate multiplied by the Velocity of the vane. As before, the corresponding force F, was found by taking the moment about the pivot of the jockey.

The distance y, represent the position of the jockey. Similarly, Momentum = Mass Flow Rate multiplied by the Velocity of the vane The only difference that is evident is only in the use of characters, otherwise, the formulas are just the same. U in the theory equation represents initial velocity just like the v in the experimental equation. While a represents the acceleration force (gravitational force) and s the distance covered (Cengel & Cimbala, 2009). The major difference between the theory and experiment performed is on the values obtained.

For example, some values were not consistent as expected and while plotting the graph, the points were expected to be in a straight line, which was not the case. A line of best fit was drawn in order make the line straight. Inaccuracy of the graph and wrong data manipulation were due to some sources. The sources of errors could have been due to incorrect timing. When determining the time interval, it could have been difficult to determine the correct interval. Another source could have been due to the incorrect measurement of volume of water collected.

This could have brought wrong Mass Flow Rate hence giving wrong Momentum. For the case of hemispherical vane, the velocity of the water jet leaving the vane was the same as that hitting it. From the data of the first trial, the velocity leaving was found to be