Postgraduate Dissertation


DESIGN AND ANALYSIS OF NOVEL TEST RIG WITH ULTRA HIGH-SPEED ROTATING SYSTEM FOR CAVITATION STUDIES

Abstract

The dissertation work is based on the study of fluid dynamics. Fluid dynamics is the movement of fluids and gases, the effect of fluids leads to issues in vast engineering fields. One of the most interesting and challenging issue due to the effects of fluids under rapid rotation is the cavitation. Cavitation bubbles generally occur in the low-pressure area than the atmospheric pressure and it damages the solid boundary in contact with them. It generally occurs in the rotating fluids and major appearance of the bubbles is in the propellers of the ships. Its major characteristics is that it can’t be predicted earlier, and found out later which makes them to be challenging to observe them in the fluids. So, to study about the cavitation an apparatus is prepared in this work and checked for its capability. In this work the novel test-rig is designed and analysis is performed for the change in pressure and velocity. The fluid mediums are selected for this analysis is water and oil to observe the pressure change in the cylinder under rapid rotation. The results obtained for the change in velocity is uniform all across the cylinder and change in pressure is so high inside the cylinder. This high pressure is observed due to the dimension of the cylinder, which is the major issue for the pressure. An comparative study has been made for both the water and oil its effects are discussed for the pressure instability. The work has been concluded that the test-rig is not capable for the cavitation study and the solution is to change the design in larger scale and some improvement is provided in the test rig.



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Authors

KAPILESHWAR DHAYANIDHI

Contributors

Researchers: TIM WYNN
Rights Holders: KAPILESHWAR DHAYANIDHI
Supervisors: IAKOVOS TZANAKIS

Oxford Brookes departments

School of Engineering, Computing and Mathematics

Degree programme

M.Sc Atuomotive Engineering With Electric Engines

Year

2019-2020


© KAPILESHWAR DHAYANIDHI
Published by Oxford Brookes University
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