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Wind Array Spacing and Rotor Envelope

Calculate whole turbine counts, center spans and rotor-envelope dimensions from actual row counts, spacing and boundary clearance without fake wake losses.

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Inputs that matter
Rotor diameter (m), Whole rows along downwind axis, Whole turbines per crosswind row, Entered crosswind center spacing (rotor diameters), and 3 more
Output to expect
Whole-array spacing and envelope
  • Check the units and required inputs before comparing results.
  • Keep the assumptions with a copied result so you can reproduce the calculation later.
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Reference & details

How it works

Whole-array spacing and envelope

Calculate center spacings, turbine count and a rectangular rotor envelope from explicit row and column counts. Preserve crosswind/downwind directions and boundary clearance; spacing alone does not predict wake losses.

Center span = (count−1) × center pitch; rotor envelope = center span + rotor diameter + two edge clearances.

Updated: September 2026

Example Scenarios

Try this example to see the calculation, then enter actual documented values and preserve the measurement conditions. A failed or unresolved comparison is part of the record.

→ 12 turbines in the entered grid

FAQ

Calculate center spacings, turbine count and a rectangular rotor envelope from explicit row and column counts. Preserve crosswind/downwind directions and boundary clearance; spacing alone does not predict wake losses.

Use the exact equipment data, measurement point, operating conditions and units described in the selected mode. Record source documents, dates and unresolved conditions in Sources and assumptions. Built-in examples illustrate arithmetic; they are not manufacturer ratings or approved designs.

Use Save planning case for an explicit local history entry. Copy MD keeps current inputs and notes; Download CSV exports the result breakdown. Export portable copies before clearing storage and save a separate case after changing equipment, conditions or measurements.

About Wind Array Spacing and Rotor Envelope

Calculate center spacings, turbine count and a rectangular rotor envelope from explicit row and column counts. Preserve crosswind/downwind directions and boundary clearance; spacing alone does not predict wake losses.