Experimental study of supercavitating flow over a cylindrical body equipped with various activators

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Abstract

In this investigation, the natural supercavitating flow with various velocities in an open-circuit water tunnel over a cylindrical body equipped with a cavitator is studied experimentally. The cavitators are cones with angles of 30º,45º,60º and a flat disk. In order to analyze the dynamic behaviour of supercavity and derive its geometrical characteristics such as its length and diameter, a high-speed photography system is used. Also several convenient sensors are utilized to measure the drag force and the pressure distribution along the body. To validate the experiments, the results obtained for the case of disk cavitator are compared with the available information in the literature. The results of this study can be employed in the design and optimization of shape and operation of cavitators in the military applications.

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References

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Iranian Journal of Mechanical Engineering Transactions of ISME
Volume 16, Issue 2 - Serial Number 35
Fluid Mechanics and Heat Transfer
September 2014
Pages 90-109

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  • Receive Date: 23 August 2014
  • Accept Date: 23 August 2014

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