Atmospheric TurbulenceImportant Concepts Used in Wind Energy

7/25/2019 Atmospheric TurbulenceImportant Concepts Used in Wind Energy

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Atmospheric turbulenceImportant concepts used in wind energy

Ameya Sathe


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Learning objectives

After this lecture you will be able to:

Explain some statistical concepts used to quturbulence

Use frequently used keywords

Explain some key aspects related to data an


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Why is turbulence relevant for Wind Ene


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How to study turbulence? Navier-Stokes Equation

Statistical concepts

Separating the average and fluctuatingcomponent:

Spectra

Distribution of energy with respect tothe frequency


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Important keywordswind vector components


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Important keywordsTurbulence Intensity


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Important keywordsturbulence scales


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Important keywordsturbulence scales

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Every wavelengbe thought as ascale


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Important keywordsintegral length scale


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Important keywordsturbulence spectra


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Data analysis Things to remember

Averaging Periods

10-min period routinely used in wind energy30-min period is recommended for turbulence studies

What are considerations?

Mainly depends on the Integral Time Scale

Larger the Integral Time Scale, larger should be averag

Sampling frequencies

What are the considerations?

Also depends on the Integral Time Scale

Normally should be much smaller than the Integral Tim


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Data analysis things to remembe Removal of spikes


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Data analysis things to remembe Detrending the time series


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Atmospheric TurbulenceImportant Concepts Used in Wind Energy

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