Method for simulating value of hydrodynamic effect of tidal current energy turbine array on basis of dynamic generalization

A numerical simulation and water turbine technology, which is applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve the problems of inaccurate approximation methods of generalized simulation methods of hydraulic turbines, and inconsistency with the actual situation of the influence of hydraulic turbine arrays, etc. To achieve the effect of reasonable development and utilization
CN106709262AActive Publication Date: 2017-05-24HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2017-05-24

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Abstract

The invention provides a method for simulating a value of a hydrodynamic effect of a tidal current energy turbine array on the basis of dynamic generalization. According to a characteristic that a turbine has different running states under different water flow velocities, when the water flow velocity is greater than a cut-in flow velocity and smaller than a cut-out flow velocity, a corresponding value of a drag coefficient is obtained by fitting a drag force discrete value provided by a turbine type, so that the obvious defect that the drag coefficient in a conventional tidal current dynamic model is kept as a constant is made up, and not only influence of form drag of a turbine generating set is considered, but also influence of a drag force (energy loss) generated by energy extraction when the turbine operates to generate electricity on a flow field is considered, thereby more accurately evaluating the hydrodynamic effect of the tidal current energy turbine array on a surrounding sea area. The method has the Important significance for reasonable development and utilization of tidal current energy.
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Description

technical field

[0001] The invention relates to the field of ocean energy development and utilization, in particular to a numerical simulation method for the hydrodynamic influence of tidal current energy turbine arrays. Background technique

[0002] Ocean energy is different from conventional fossil energy. It can use the ocean to extract energy and generate electricity without generating waste gas and waste heat, and does not pollute the ecological environment. Among them, tidal current energy has attracted more and more attention because of its advantages such as high prediction accuracy, good continuous energy supply, large reserves and energy flow density, and its wide distribution range has become an important part of ocean energy development and utilization. Reasonable development of tidal current energy is an important means to solve the shortage of resources in coastal areas, and it is of great significance to promote the sustainable development of my country's econ...

Claims

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