Haedong Kim*, Hyeonjin Cho
The Journal of Mechanical Science and Technology, vol. 25, no. 3, pp.759-765, 2011

Abstract : This paper presents a numerical study on control effectiveness of a high-speed underwater vehicle with cruciform stern configuration using a computational fluid dynamics approach. The calculation of the control derivatives of the underwater vehicle is validated by comparison with the experimental results of towing tank tests. The screw propeller of the vehicle is modeled as a momentum source and its influence on the computational results is examined. The numerical results show that the force derivatives of the vehicle are overpredicted by about 5% and the moment derivatives of the vehicle are over-predicted by about 10%.

Keyword : Control derivatives; Computational fluid dynamics; Cruciform stern configuration; High-speed underwater vehicle; Momentum source model