Calculation of hydrodynamic coefficients of a submerged body with hull, sail and appendages and their length dependence. | [Proceedings of 4th International Bhurban Conference on Applied Sciences and Technology • 2005]

Author(s):

1. M. Sohaib: CFD-Chapter, Computational, Modeling, Control & Simulation Society, Pakistan

2. M. Ayub: CFD-Chapter, Computational, Modeling, Control & Simulation Society, Pakistan

3. S. Bilal: CFD-Chapter, Computational, Modeling, Control & Simulation Society, Pakistan

4. S. Zahir: CFD-Chapter, Computational, Modeling, Control & Simulation Society, Pakistan

5. Mahmood A. Khan: CFD-Chapter, Computational, Modeling, Control & Simulation Society, Pakistan

Abstract:

A comprehensive study has been made for the hydrodynamic analysis of the complete submarine DARPA 2, including hull, sail and appendages. The analysis was performed for the submarine hull, with sail on top and four stern appendages. Pressure distribution, forces and moments were calculated over the complete submarine. Comparison of Normal force and pitching moment of complete submarine having mid body length L, shows a reasonable agreement with the experimental results of DARPA 2. Further the study was extended to calculate the yawing moment and drag coefficient for length L. Comparison of Yawing moment at different drift angles shows quite a good agreement with experiment. Drag coefficient was calculated at different angles of attack. The analysis was also performed to study the effects of changing middle body length over the Forces and Moments. Pressure distribution, forces and moments were calculated over the complete submarine for lengths L-1, L and L+1 at different angle of attacks. The results revealed that by increasing the middle body length of submarine, the Normal force, pitching moment and drag coefficient increases and vice versa. Both quantitative and qualitative analysis of the complete submarine estimate the required design force and moment at different angle of attacks and also demonstrate the flow visualization.

Page(s): 89-96

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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