velocitydeflectionSoftware: FLORIS, FOXES, PyWake · Rotor diameter 240 m · Wind speed 9.8 m/s
View the four turbines scenario for this wake model →
The windIO inputs and their software-specific mappings are listed below. Matching literature-model names do not imply identical solver, rotor-averaging, superposition, turbulence, induction, or yaw treatments.
Uses sum-of-squares freestream deficit superposition (sosfs), a nine-point turbine-grid solver, and Crespo-Hernandez wake-added turbulence. Secondary steering, yaw-added recovery, transverse velocities, and active wake mixing are disabled.
Converts the windIO coefficient with kd = beta / 2 because FLORIS uses 1 + 2*kd*x/D where the other implementations use 1 + beta*x/D.
Uses Betz induction, quadratic wind-speed superposition, grid16 rotor sampling, rotor-point partial wakes, and the rotor_wd wake frame. No separate wake-added turbulence model is configured.
Uses JimenezDeflection with rotate=False, translating the wake path without rotating the wake cross-section.
Uses PropagateDownwind with squared-sum superposition, GridRotorAvg rotor averaging, effective local wind speed, and ct2a_mom1d induction. No separate wake-added turbulence model is configured.
Uses the lower-level NOJDeficit class rather than PyWake's Jensen_1983 literature preset.
Caveat: This is a coupled comparison: yaw-dependent thrust, velocity deficit, deflection, rotor averaging, and wake superposition can all contribute to differences. It does not isolate the deflection equation.
Turbine positions (bold, rotated by yaw angle where applicable) and the cross-section sample planes (dashed) used by the plots below.
X-Y plane at hub height.
X-Z plane at Y=0 (lateral centerline).
Y-Z plane at X=5D.
Pairwise error between software for each plotted quantity. Click a column to sort.
| Software pair | Target | RMSE (m/s) | Max abs error (m/s) | Mean abs error (m/s) | NRMSE |
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