Philip Mah Koon Yue
Mohananda a/l Anantha Krishnan
Ahmad Saeed Abood
Eleanor Hang Lee Shean
Chan Jun Hoe
School of Engineering
Taylor’s University
Malaysia
23 March 2011
Table of Content
Abstract 3 1. Introduction 3 2. Experiment Design 3 2.1 Materials 3 2.2 Methods & Procedures 4 3. Results and discussion 5 4. Conclusion and Recommendations 8 References 8 Appendix 9
Abstract The experiment was conducted to find the impact of water on different types of vanes, it consists of 3 types the flat plate, conical cup and the hemispherical cup. Forces are generated by jet of water impacts the vanes that produces various angles of deflection. In the end the slope calculated was used to compare with the theoretical slope and the deviation slope was calculated.
1.0 Introduction
One of the ways of producing mechanical work from fluid under pressure is to use the pressure to accelerate the fluid at high velocity in a jet. The jet is directed on the vanes of a turbine wheel, which is rotated by the force generated on the vanes due to the momentum change or impulse which takes place as the jet strikes the vanes. Water turbines working on this impulse principle have been constructed with outputs of the order of 100,000 kW and with efficiencies greater than 90%.
There are mainly two objectives for this experiment, first of which is to measure the force generated by impact of the jet on vanes of various shapes. Second is to compare the results from the experiment with the theoretical calculations. In this experiment, the force generated by a jet of water as it strikes a flat plate, conical plate, and hemispherical cup may be measured and compared with the momentum flow rate in the jet.
2.0 Experiment Design
2.1 Materials 3 Different shapes of plates – A total of 3 different plates are used for this experiment, a flat plate, a conical plate, and a hemispherical cup. Water is deflected from these plates at various angles. Stopwatch – A
References: Walker, R 2010, Density of Water (g/cm3) at Temperatures from 0°C (liquid state) to 30.9°C by 0.1°C inc. viewed March 27 2011, http://www.simetric.co.uk/si_water.htm