Turbulent parametric (IEA 22 MW)

This manual reproduces the turbulent-wind load statistics and blade-root damage equivalent loads (DELs) for the IEA-22-280-RWT-Onshore reference turbine using the TurbineX web app — the same click-through format as the steady-state manual, but with turbulent (TurbSim / NTM) inflow and multiple seeds.

Download the full manual — IEA 22 MW turbulent (PDF)

Step 1 — Configure turbulent inflow

Create a Parametric Analysis study and pick IEA-22-280-RWT-Onshore on the Turbine tab (production physics — gravity, shaft tilt, flexible tower, ROSCO). On the Environment tab, choose the TurbSim Full-Field wind-model card and set:

On the Sweep tab, set the wind_speed axis to the reporting grid (5, 9, 11, 13, 17, 21, 25 m/s) and Seeds per combination = 6 (only shown for TurbSim inflow). That is 7 × 6 = 42 jobs; the worker generates a distinct TurbSim box per seed.

Step 2 — Run and read the sweep curves

Submit from the Run tab and watch the batch drain in the Job Monitor (each turbulent job runs TurbSim then OpenFAST). When complete, the Results tab’s Sweep curves panel plots any channel’s per-seed statistic against wind speed — mean across seeds with a ±1σ band. Pick a load channel (e.g. blade-root moment) and the Mean statistic to read the turbulent load envelope; Download CSV exports the underlying numbers.

Expected result

All 42 jobs complete, and the mean±σ envelope reads as a consistent turbulent operating curve: rotor speed and power climb along the control law and saturate at rated 22 MW, blade pitch ramps above rated, and the seed-to-seed band stays tight.

One caveat worth knowing: the out-of-plane blade-tip deflection reads high (~21 m at rated). That is the same value the steady-state sweep produces, and it is over-predicted by the ElastoDyn modal blade (CompElast = 1) on this very large, flexible 138 m blade — the geometrically-exact BeamDyn model would give a smaller value, but it does not yet converge on this bundle. Read the tip-deflection curve as an upper bound.