... value computed upstream oil & gas dp system cd value knot jackup vessel water current calculation subsea system coefficient drag coefficient operation cfd analysis platform design dp jackup vessel spud drag coefficient value Evaluation of Drag Coefficient Variation in Transit...

... and characteristics. Measured results in field experiments conducted in Komatsu-shima are presented. subsea system remotely operated vehicle adcp vertical water column survey collision avoidance zone upstream oil & gas pid controller water column survey characteristic water current water depth...

... to control robot depth by adjusting robot buoyancy. In addition, the effect of wing control to reduce robot drifting in the water current is discussed. Rough mode corresponding control is detailed. Line tracking method based on the control of two movable fins and buoyancy control device was adopted...

... for the structure and the people around it. A robotic system that can construct 3D models of marine structures would hopefully reduce the chances of oversight, and hence improve the safety of marine environment. Due to the water currents and wakes, developing a robotic system to construct 3D models of marine...

... spilled oil on sea surface by controlling the area and the direction of the sail and a rudder. We calculated an equilibrium state for steady sailing condition of a yacht in wind and water current drifting along the resultant vector of the vector with 3 % of wind strength and vector of water current...

... convection calculation erosion canadian ice service iceberg deterioration savage wave period iceberg forecasting model iceberg mass iceberg water temperature salinity mechanism modeling deterioration process fracture wave height waterline length water current deterioration...

... important issues. water current particle dispersion water current speed evaporation water column cellular automata chemical spill time step upstream oil & gas vertical dispersion wind speed cell array oil mass oil spill water surface water depth oil slick artificial intelligence...

..., the vertical distribution of water current is incorporated in calculations of water drag force on the iceberg keel. The model is also the first to include treatment of calving, prediction of calved ice piece size distribution and deterioration, as well as the drift of calved pieces. This paper gives...

... ABSTRACT This paper describes the experimental results on the guidance and control of an underwater vehicle equipped with 2 pairs of the oscillating fins in water currents. At first, we demonstrated that the vehicle has the performance of surveying the surface of the circular cylinder in water...

... the heading to the wall and keeping the distance to the wall in waves. The vehicle can be guided from a far point to an underwater post and docked with it in water currents flowing perpendicularly to the course. The vehicle can performs inspection task around a circular cylinder keeping the distance...

... ridges sweep down channel, instruments down to a depth of 30 meters or more are at risk. deployment winch drum seamotor prototype instrument buoyancy energy conservation profiler water current cable consumption oceanography bedford institute midwater float icycler prototype sensor...

... tensions as well as viscosities. Spreading coefficients were calculated from measured surface and interfacial tensions. Results were obtained for original and weathered oils. For the spreading tests, spill volumes up to 3 litres and water currents up to 0.55 m/s were used. Tests were done using both fresh...