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Underwater vehicle trajectory moving close to the sea bed differs due to change in hydrodynamic co-efficient. This paper focuses on the lift and drag coefficient with various angles of attacks on underwater body with varying sea bottom distance. Commercial 3D CFD code is used for numerical analysis. The results highlighted that the drag & lift co-efficient increase as body approaches sea bed with...
The objective of this study was to determine the rolling moment for hemispherical nose cylinder configuration caused by the two asymmetric strips on the cylinder. The rolling moment for this configuration was initially predicted using Finite volume based CFD code. The study was carried out at different angles of attack and side slip angles to measure the rolling moment coefficient of the Configuration...
Present study is about free surface effects over shallowly immersed hydrofoil. Naca0012 hydrofoil at angle of attack 5 degree, Froude number of 0.5672 and Reynolds number of 1.7695e6 is studied using unsteady Reynolds average Navier-stokes code with a k-epsilon turbulence model and free surface volume of fluid (VOF) tracking method. Naca0012 hydrofoil is moved with various depths using moving mesh...
Human hand posture detection and recognition is a challenging problem in computer vision. We introduce an algorithm that is capable to recognize hand posture in a sophisticated background. The system combines two algorithms to achieve better detection rate for hand. Recently Viola et al. in have introduced a rapid object detection scheme; we use this approach to detect the hand posture in the first...
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