Major structure change (RotorAvgModel, GroundModel, Separate area_overlapping_factor, TurbOPark verification etc)

Alex authored 3 years ago and Mads M. Pedersen committed 3 years ago

codestyle and test crash fix

Implemented wake_radius() function for the different wake models and modified args4turb to be independant from deficit

Added different superposition models for turbulence intensity, as StenFrandsen uses effective turbulence intensity instead of the usual added turbulence intensity

add selfsimilarity blokage model
prepare for gradients
New structure. Old WakeModel mainly in new EngineeringWindFarmModel
add deflectionmodel
update documentation

Prepare for iterative calc_wake backend by adding an the source-wt dimension(i) to all calc_deficit arguments

deleted test_examples.py as all example modules are tested in test_main.py

- ti_map added
- default ti changed from 0.75 to 0.075