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Underwater equipment is a set of marine equipment used for purposes such as exploration, drilling, submarine cabling, maintenance and repair of offshore structures, and military applications. In this research, we try to provide a suitable background for the conceptual d...

Permanent magnet motors have some advantages such as high power density, high efficiency and good thermal characteristic and are used in many industrial applications. The aim of this paper is to present the optimal design and fabrication of a counter rotate brushless pe...

The purpose of this paper is to investigate the behavior of positive buoyancy jets of urban wastewater in stationary and non-stratified water bodies using the investigation of the laboratory data acquired by a 3D-LIF laser 3D scanning system and numerical modeling resul...

In this paper, selecting of an appropriate mooring system for spar platform of a wind turbine consisting of chain–cable–chain is investigated based on a meta-heuristic method. The purpose is to investigate the hydrodynamic behavior of the structure and the mooring syste...

The water entry problem of spherical projectile is simulated numerically and experimentally in this study. An explicit dynamic analysis method is employed to model the fluid-structure interaction using a Coupled Eulerian-Lagrangian (CEL) formulation that is available in...

In recent years, using the offshore platforms in deep water locations is increasing for extracting oil and renewable energy. In such places, the harsh environmental forces of wind and sea waves cause vibration and instability for the structure. One of the optimized solu...

In this study, the results of a direct numerical simulation of turbulent drag reduction in a channel flow by hydrophobic coating at a nominal shear Reynolds number of Reτ = 180 are reported. Slip condition is imposed on the lower wall whereas the upper wall has no-slip ...

One of the major and effectual issues in designing of floating breakwater is its geometry. In this study, effect of geometry of floating breakwater on wave transmission coefficient for the periods ranging from 0.63 to 1.26(s) will be discussed using Flow_3D software, wh...

Precision and reliability are two main performance characteristic in low-cost Inertial Navigation System(INS). Increase of precision in low-cost INS without auxiliary sensors is main challenge. Bias instability leads to position drift error in inertial navigation system...

In this paper, the governing equations of sea waves are analyzed nonlinearly and the energy extraction from the waves in the Lark and Faror islands in the Persian Gulf is determined. According to the data in the last 31 years, the waves of these two islands have the mos...