Abstract
To make a curvilinear motion in the horizontal plane is one of the most contents for realizing the maneuverability of the supercavitating vehicle. It is significant to achieve the controllability and maneuverability of the vehicle in three dimensions both theoretically and practically on research. Models of angle of attack, gravity and inertial force effects on the supercavity in the horizontal curvilinear motion are established, respectively. The supercavity is simulated based on these models in combination with Logvinovich model and the unsteady gas-leakage rate model at the given ventilation rate, and the effect of the inertial force on it is analyzed numerically. Results show that the maximum deviation of the center line of the cross section of supercavity towards the outward normal direction of its trajectory increases as the cavitation number or curvature radius decrease and always occur in the tail because of the increase of inertial effects along the axis of supercavity from the cavitator when other models and flow parameters are constant for the given trajectory curvature. For the variable curvature, the supercavity sheds due to its instability caused by the time-varying angle of attack. The deviation increases along the length of supercavity if the curvature remains the same sign.
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This work was financially supported by the National Natural Science Foundation of China (Grant No. 10832007).
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Zou, W., Yu, Kp., Arndt, R.E.A. et al. Modeling and simulation of supercavity with inertial force in the horizontal curvilinear motion. China Ocean Eng 28, 31–42 (2014). https://doi.org/10.1007/s13344-014-0002-y
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DOI: https://doi.org/10.1007/s13344-014-0002-y