MonopileΒΆ
The monopile
is defined similar to the tower
.
transition_piece_mass: 100000.0
outer_shape_bem:
reference_axis: &id004
x:
grid: [0.0, 0.5, 0.6111111111111112, 0.7222222222222222, 0.8333333333333334, 0.9444444444444444, 1.0]
values: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
y:
grid: [0.0, 0.5, 0.6111111111111112, 0.7222222222222222, 0.8333333333333334, 0.9444444444444444, 1.0]
values: [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
z:
grid: [0.0, 0.5, 0.6111111111111112, 0.7222222222222222, 0.8333333333333334, 0.9444444444444444, 1.0]
values: [-75.0, -30.0, -20.0, -10.0, 0.0, 10.0, 15.0]
outer_diameter:
grid: [0.0, 0.5, 0.6111111111111112, 0.7222222222222222, 0.8333333333333334, 0.9444444444444444, 1.0]
values: [10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0]
drag_coefficient:
grid: [0.0, 1.0]
values: [0.5, 0.5]
internal_structure_2d_fem:
outfitting_factor: 1.07
reference_axis: *id004
layers:
- name: monopile_wall
material: steel
thickness:
grid: [0.0, 0.5, 0.6111111111111112, 0.7222222222222222, 0.8333333333333334, 0.9444444444444444, 1.0]
values: [0.055341, 0.055341, 0.055341, 0.047677, 0.047357, 0.039697, 0.042419]
transition_piece_cost: 0.0
gravity_foundation_mass: 0.0
reference_axis
ObjectThe field
reference_axis
describe the three-dimensional shape of the reference axis of the monopile via three sub-fields, namelyx
,y
, andz
. The three sub-fields contain the pairs of arraysgrid
andvalues
. The former is nondimensional, while the latter is expressed in meters.x
,y
, andz
are expressed in the monopile reference system, withx
parallel to the ground pointing downwind,y
parallel to the ground and to the rotor plane, andz
perpendicular to the ground pointing upwards. Standard monopiles are only defined alongz
.outer_diameter.values
Array of floats, mDiameters of the monopile defined from monopile base (grid = 0) to monopile top (grid = 1).
drag_coefficient.values
Array of floatsThis is the equivalent drag coefficient used to compute the aerodynamic forces generated by the monopile immersed in the flow. Standard aeroelastic solvers use this parameter.
outfitting_factor
FloatMultiplier of monopile mass to account for the mass of the auxiliary systems, such as paint or extra structural elements. This can be used to convert the mass of the steel cylinders to the total mass of the monopile.
The field layers
mimic the same field of the blade/tower.