plant_energy_wake_linear.yaml

$schema: "http://json-schema.org/draft-04/schema#"
title: IEA Wind Task 37 Wind Plant Ontology version 0.1
description: wake definition for a plant energy production model

# Draft schema definitions for energy model
definitions:
  wake_linear:
    type: object
    description: an individual wind turbine wake

    properties:
      #inputs
      air_density:
        type: number
        description: air density associated with operating mode
        units: kg / m^3
        default: 1.225
        minimum: 0.5
        maximum: 2.0

      wind_speed:
        type: number
        description: The current wind speed at hub height
        minimum: 0.0
        maximum: 200.0
        units: m/s

      c_p:
        type: number
        description: The current power coefficient of the wind turbine
        minimum: 0.0
        maximum: 0.599
        expr: power / (1/2 * air_density * rotor_area * wake_combination:effective_velocity**3.0)

      c_t:
        type: number
        description: The current thrust coefficient of the wind turbine
        minimum: 0.0
        maximum: 1.2
        expr: thrust / (1/2 * air_density * rotor_area * wake_combination:effective_velocity**2.0)
          
      #outputs
      velocity_deficit:
        description: velocity deficit of the wake
        type: number
        units: m/s


     ############     
     #Ewan suggests including this (for discussion)   
      yaw:
        description: turbine specific yaw angle (should be 0 for non-FLORIS models as a cross-check)
        type: number
        units: degrees


     #################
     # Extensions or examples to include Larsen, Jensen, Floris?, Porte Agel?
      ambient_average_turbulence_intensity:
        type: number
        description: ambient average turbulence intensity at hub height #Larsen
        units: nondimensional
        default: 0.10
        minimum: 0.03
        maximum: 0.40
      
      wake_decay_coefficient:
        type: number
        description: wake decay coefficient #Jensen
        default: 0.075
        minimum: 0.01
        maximum: 0.09