v5.1.0

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Switch from xPPTRF to xPOTRF to improve performance in TurbSim on macOS

Module: TurbSim

Type: Enhancement

Status: Closed (completed).

#3120 In OpenFAST/openfast;

· by IrisMeasure was closed on Mar 10, 2026

OpenFAST distributed through homebrew does not include version info

Type: Build issue

Type: Enhancement

Status: Closed (completed).

#1853 In OpenFAST/openfast;

· by andrew-platt was closed on Feb 17, 2026

Implement under-relaxation for the tight-coupling iterative solver

Solver: tight coupling

Type: Enhancement

Status: Merged (completed).

OpenFAST/openfastnumber 3300

#3300 In OpenFAST/openfast;

· by luwang00 was closed on Apr 14, 2026

Implementation of generalized support structures in AeroDyn

Module: AeroDyn

Type: Enhancement

Status: Merged (completed).

OpenFAST/openfastnumber 3311

#3311 In OpenFAST/openfast;

· by luwang00 was closed on Aug 29, 2026

SoilDyn/SubDyn: reaction loads when REDWIN is used

Module: SoilDynSoil interaction module (REDWIN DLL coupling)Soil interaction module (REDWIN DLL coupling)

Module: SubDyn

Status: Merged (completed).

OpenFAST/openfastnumber 3319

#3319 In OpenFAST/openfast;

· by RBergua was closed on Apr 28, 2026

MoorDyn: Feature/syrope for polyester

Module: MoorDyn

Type: Enhancement

Status: Merged (completed).

OpenFAST/openfastnumber 3324

#3324 In OpenFAST/openfast;

· by zhilongwei was closed on Jun 4, 2026

Mesh-based nonlinear Froude-Krylov and hydrostatic load calculation in HydroDyn

Module: HydroDyn

Type: Enhancement

Status: Merged (completed).

OpenFAST/openfastnumber 3336

#3336 In OpenFAST/openfast;

· by luwang00 was closed on Jun 4, 2026

ServoDyn-StC: StC_SA_MODE validation logic

Module: ServoDyn

Status: Merged (completed).

OpenFAST/openfastnumber 3348

#3348 In OpenFAST/openfast;

· by RBergua was closed on Jun 25, 2026

SubDyn: add per-member discretization support to align meshes with HydroDyn

Module: SubDyn

Type: Enhancement

Status: Merged (completed).

OpenFAST/openfastnumber 3385

#3385 In OpenFAST/openfast;

· by luwang00 was closed on Jul 30, 2026

Add SeaState current profile input through a user-provided ASCII file (CurrMod=3)

Module: SeaStateSeaState module for wave data generationSeaState module for wave data generation

Type: Enhancement

Status: Merged (completed).

OpenFAST/openfastnumber 3390

#3390 In OpenFAST/openfast;

· by luwang00 was closed on Jul 16, 2026

Write linearization (.lin) output at full precision, independent of OutFmt

Feature: Linearization

Module: OpenFAST Lib

Status: Merged (completed).

OpenFAST/openfastnumber 3393

#3393 In OpenFAST/openfast;

· by mayankchetan was closed on Jul 21, 2026

Upgrade FFTPACK 4.1 -> 5.1, add 2D FFT

Module: NWTC Lib

Status: Merged (completed).

OpenFAST/openfastnumber 3412

#3412 In OpenFAST/openfast;

· by andrew-platt was closed on Aug 13, 2026

FFTPACK 5.1: suppress default-real promotion for Intel and Flang builds

Compiler: Intel

Compiler: Intel IFX

Status: Merged (completed).

OpenFAST/openfastnumber 3458

#3458 In OpenFAST/openfast;

· by andrew-platt was closed on Sep 10, 2026