Bladed Software WindFile Calculation

With 3.81 Version of demo_a.prj For example , Briefly introduce the calculation process of Turbulent Wind file .

One 、 Setting up a turbulent wind field

First of all, it is required to follow the design standards of wind turbines , Such as IECⅠ class ,IECⅡ Class etc. , Define the 3D turbulent wind field , And calculate the wind file .

double-click Wind Turbulence, Open the following window

Define turbulence

1)Number of points along Y： Comprehensive calculation ability and accuracy , The node distance shall not be greater than 5m. Such as 90m Is set to 19, The number of nodes should be increased 1, Not the number of segments 18.

2)Number of points along Z： Comprehensive calculation ability and accuracy , The node distance shall not be greater than 5m. Such as 110m Is set to 23, The number of nodes should be increased 1, Not the number of segments 22.

3)Volume width Y： Able to cover the diameter of the wind turbine , Slightly larger than . The diameter of the wind wheel in the example is 80m, This is set to 90m.

4)Volume width Z： It can cover the height of the whole unit , Slightly larger than （ Hub height + Wind wheel radius ） that will do . The hub height in the example is 61.5m, Add the wind wheel radius , This is set to 110m.

5)Duration of wind file： Simulation duration of wind speed , according to IEC The standard for the 600s（ According to the simulation time , It is amended as follows 601,621 etc. ）.

6)Frequency along X： Sampling frequency of wind speed , Automatically adjust the appropriate frequency , Greater than 10Hz that will do .

7)Mean wind speed： Average wind speed .

8)Turbulence Seed： random number （0~999）, Different random numbers produce different wind speed sequences , If other parts are the same , The same goes for random numbers , The generated wind files are exactly the same , Does not meet the standard requirements .

Spectrum Type

because IEC editon3 The standard has been cancelled von Karman Model , Not recommended .
Von Karman Model settings

Kaimal Model settings
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Mann Model
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Two 、 Generate wind files in batch

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Please pay attention to the official account.