Richard J.A.M. Stevens

Physics of Fluids · University of Twente

Publication 32 · Wind-farm flow

Large eddy simulation studies of the effects of alignment and wind farm length

R.J.A.M. Stevens, D. F. Gayme, C. Meneveau, J. Renew. Sustain. Energy 6, 023105 (2014).

Main finding

Whole-farm mean peaks near 11 degrees. Directly demonstrated for the two tested spanwise spacings and finite row counts.

Cumulative wind farm power against alignment angle for two spanwise spacings
How to read the figure. Wind farm power against the alignment angle of the array, cumulated over increasing numbers of rows, for two spanwise spacings. The whole-farm mean peaks near 11 degrees rather than at the perfectly staggered angle. Individual rows peak elsewhere - the second and third rows nearer 12 to 15 degrees in Figure 5 - so the best angle depends on how much of the farm is being counted. Open the full-resolution figure. Figure 12. R.J.A.M. Stevens et al. (2014). No separate licence is stated here; consult the original publication and credited source before reuse.

Why this matters

The study separates entrance-region layout effects from the boundary-layer-controlled behaviour of a fully developed wind farm.

Research context

Any downstream use must distinguish entrance and fully developed regimes and retain the shared-dataset limitation.

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