Study on drag reduction by supercavitation for axisymmetric bodies. | [Proceedings of 4th International Bhurban Conference on Applied Sciences and Technology • 2005]

Author(s):

1. Mahmood Alam: National Engineering and Science Commission (NESCOM), Islamabad, Pakistan

2. Hafiz Rafi: National Engineering and Science Commission (NESCOM), Islamabad, Pakistan

3. S. Bilal: National Engineering and Science Commission (NESCOM), Islamabad, Pakistan

4. S. Zahir: National Engineering and Science Commission (NESCOM), Islamabad, Pakistan

5. M. A. Klan: National Engineering and Science Commission (NESCOM), Islamabad, Pakistan

Abstract:

A study on reduction of drag by supercavitation for axisymmetric bodies was done numerically with a bubble two-phase model using commercial CFD code Fluent 6.1. The work included the effect of body shape on drag coefficient and supercavity sizes; drag coefficient Cd as a function of cavitation number; and the effect of the ratio of length L to diameter D on drag reduction rate. The work on drag reduction method of supercavitation shows that supercavitation greatly reduces the drag coefficient. There may be a best combination among body shape, cavitation number, engineering feasibility and so on, which makes the drag reduction rate highest. The results were compared with the experimental results of Stinebring, Billet and FU Huiping’s, numerical results. A good agreement was found between the predicted and experimental results.

Page(s): 123-131

DOI: DOI not available

Published: Journal: Proceedings of 4th International Bhurban Conference on Applied Sciences and Technology, Volume: 0, Issue: , Year: 2005

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