ksk5429 / numerical_model Star 0 Code Issues Pull requests Discussions Op^3 (OptumGX-OpenSeesPy-OpenFAST) integrated numerical modeling framework for offshore wind turbines. 11 examples (NREL 5MW + IEA 15MW + Gunsan + 4 isolation tests + 2 SACS jackets), 33/33 analyses passing, fully open-source path with industry-standard 6x6 stiffness formulas (DNV, ISO, API, OWA). reproducibility phd-dissertation nrel openfast tripod jacket sacs dnv openseespy iea-wind soil-structure-interaction plaxis offshore-wind scour suction-bucket optumgx monopile floating-wind Updated Apr 9, 2026 Python