# Impact of a Jet

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F2:IMPACT OF A JET REPORT AUTHOR: FAITH MURDATE: 30/03/2012 2012 UNIVERSITY OF LEICESTER ENGINEERING DEPARTMENT Table of Contents SUMMARY 3 INTRODUCTION 4 Aims 4 PROCEDURE 6 APPARATUS USED: 6 Steps followed: 6 RESULTS 7 Hemispherical plate 7 Flat plate 8 Calculation of mass flow rate using experiment values 10 DISCUSSION 11 CONCLUSION 11 REFERENCES 12 Appendices 13 SUMMARY In this experiment the force generated by the jet of water striking a flat plate or a hemispherical cup is measured and results are compared to those of the computed flow rate in the jet. Through the use of simple moments an equation was derived so that the force exerted by the jet using the jockey weight , the graduated length of the pivot arm, and the distance from the pivot to the jet acting at zero point of the jockey weight will be measured. The force acting on the surfaces for various flow rates is also measured. Results are represented in a table and in form of graphs. INTRODUCTION Aims * To study the forces resulting from the impact of jet when it hits a flat or hemispherical cup * To compare the force produced to the momentum flow rate in the jet * To compare theoretical results of the force to the experiment calculated result Over the past periods, engineers have found various ways to make use of the force that can be generated by a jet of fluid when it hits a surface. Like water turbines are used to generate hydropower using the mechanism of force generated by a jet of fluid. By using the pressure at a high velocity of a moving fluid mechanical work can be produced. As in this experiment the force is produced when the jet of water from the nozzle hits the plane of the surface plate. These types of forces can be used to generate systems e.g. hydropower turbines, in industries to cut metals or when