A rapid method for calculation of second-order hydrodynamic wave loads on semi-submersible platforms is developed and validated against radiation–diffraction theory. The based slender-body theory builds modal truncation the quadratic transfer function (QTF). floater split into individual members existing vertical cylindrical columns extended to include heave force. Further expressions surge, pi...

In recent years, with the development and progress of science technology, all kinds water underwater vehicles have been gradually integrated into commercial civil marine operations, which are self-energy, autonomous control, flexible convenient, can be widely used in fish monitoring, population migration, environmental protection, early warning, survey, etc., while better attitude adjustment po...

Object of research: induction submersible electric motor as a part drive centrifugal pump.
 Subject the non-nominal operation modes motors, including wedging.
 Purpose creation research methodology motors at operation, variation frequency feeding voltage and its magnitude.
 Methods theory electromechanical transformation energy, digital modeling, statistical data processing, meth...

As the development and infrastructure of deepwater oil gas resources, performance offshore platform is directly related to personnel safety, equipment normal production drilling process. Therefore, hydrodynamic calculation[1] flow response-based control optimization are current hot research topics. Semi-submersible marine platforms widely used in industry due their large deck area, strong wind ...