However, there is still a long way to reach a wide commercial application of FOWT due to the weak economic competitiveness. Over the most recent decade, dozens of FOWT concepts have been proposed and studied worldwide. Because the traditional bottom-fixed foundations are uneconomical for harvesting wind energy in waters deeper than 50m, floating offshore wind turbine (FOWT) concepts appear more suitable for deeper waters. INTRODUCTION Since year 2000, the offshore wind technology has been developing rapidly due to rich resources of wind power in oceans. The effects of fish nets on the dynamic responses of FOWT-SFFC are also discussed. The dynamic performance of FOWT-SFFC subjected to wind and wave actions is investigated. In this study, a brief description of this concept is given first and then the stability behavior and hydrodynamic behavior are studied. In order to shorten the payback period of the investment of floating offshore wind farms, an innovative structure integrating a floating offshore wind turbine with a steel fish farming cage (FOWT-SFFC) has recently been developed by authors. The industries of offshore wind and aquaculture seem irrelevant, but in reality they can be delicately integrated to improve utilization of marine space. On the other hand, to better exploit water resources, the offshore aquaculture industry is also developing rapidly and entering deep waters.
However, since offshore wind farms are moving to deeper waters, floating wind turbines must be adopted to reduce the high installation cost of foundations. To date a great number of bottom-fixed horizontal-axis wind turbines (HAWTs) are deployed in offshore regions of water depth less than 40m, due to the commercial success of HAWTs onshore (Cahay et al., 2011). These two energy resources are abundant in offshore seas. INTRODUCTION The increasing interest in exploitation of wind and solar energy resources has lasted for decades because they are easily available, sustainable, and pollution free. It is a promising concept to deploy in intermediate and deep waters. The results affirm that WSA is technically safe and feasible. Using the developed tool, turbine aerodynamic performance, tower base bending moments, global WSA motions, and tension of mooring lines are investigated.
#What is orcaflex software
It can be exported into the commercial software Orcaflex to achieve fully coupled analysis of the WSA system.
#What is orcaflex code
The details of WSA are described in this study.Īn aerodynamic source code based on the double multi-streamtube theory is developed. The WSA aims to exploit the marine resources more effectively, while significantly shorten the payback period of investment in offshore wind turbines. A novel concept of a floating wind-solar-aquaculture (WSA) system, combining multiple megawatt (MW) vertical-axis wind turbines (VAWTs) and solar arrays with a floating steel fish-farming cage, is presented. Meanwhile, the offshore solar energy is also drawing more and more attention from the academic communities. Subsequently, coupled dynamic analysis is performed for the production risers using the dynamic analysis software OrcaFlex.Results and discussion evaluate the impact of the dynamic behavior and stress of the production risers as well as the cost.ĪBSTRACT Both offshore wind energy and offshore aquaculture are developing rapidly and moving into deeper waters to acquire better resources. Hydrodynamic data such as added mass and damping coefficients, forces and motion Response Amplitude Operators (RAOs) of the Spar are first obtained using the simulation software MOSES through uncoupled analysis. The production risers are modeled on Spar floater subjected to environmental conditions in the Gulf of Mexico. The basic cost comparison is carried out briefly to assess their suitability in deep waters.
#What is orcaflex free
This paper serves to analyze and compare the dynamic behavior between different kinds of production risers (Steel Catenary Risers, Flexible Dynamic Risers, and Free Standing Hybrid Risers) and their impact on the floating production platform (floater) in an actual field environment. A key factor is a dynamic behavior as it may lead to increased loads on the platform (floater), especially under severe environmental conditions.
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