v3.7.0

Features:

• Active wake control added to joukowsky disk models
• FreeSurfaceSampler: option to use linear interpolation in numerical beach for smoother profile
• OceanWaves: relaxation zones implemented in the y direction
• Option to initialize hydrostatic pressure for two-phase cases (helps with overset)
• Upgrades to field norms post-processing: different norms, can choose to consider components or vector magnitude
• Better timing and profiling outputs, options
• Python tools added for converting native sampling data to ASCII

Fixes:

• OceanWaves: Waves2AMR initialization is more reliable at coarse resolutions

v3.6.0

Features:

• Upgrade OpenFAST 4 interface to be compatible with 4.1. This deprecates compatibility with OpenFAST 4.0.
• Mesh refinement tagging: user-defined functions can be implemented from input file arguments
• Sanity checks added to terrain file reader

Fixes:

• When starting from scratch with boundary plane input, initial iterations are now possible
• (In ExaWind solver) max steps and stop time ignored during overset simulation

v3.5.0

ExaWind compatibility:

• This is the minimum version required to compile with exawind-driver v2.0.0, which features adaptive time stepping
• Modified masking for pressure solvers in two-phase simulations for better stability
• FreeSurfaceSampler made smarter for overset simulations, where nalu-wind vof field is more diffuse

Features:

• Potential temperature evolution calculated using density * theta. More conforming to other modeling approaches, e.g., ERF
• Phase-aware advection (already used in the momentum equation) implemented for scalar transport, e.g., density. Improves stability for two-phase ABLs.
• User-specified constant Monin-Obukhov length
• ABL Wall Model: Ability to specify thermal roughness length and aerodynamic roughness length separately
• ABL Initialization: Terrain-aligned profile specification
• Significantly improved usability of post-processing output arguments, which are generalized for all types of post-processing that write to files
• Ability to have phase-averaged time averaging instances
• Ability to have more than one time averaging instance in a simulation
• More features for adaptive time stepping, e.g., max_dt and min_dt

Fixes:

• Removed analytical drag model from waves as terrain implementation; was double-calculating the form drag
• Initial density check made robust for many levels, different BCs
• RK2 approach for explicit diffusion corrected for non-unity density
• Consistency between VOF and density BCs in two-phase simulations
• Corrections to Waves2AMR framework for reading irregular waves
• Removed old code allowing inflow at outflow boundaries by default

v3.4.2

Two bug fixes added to v3.4.1:

• Make initial density check robust for many levels, different BCs (#1586)
• Fix RK2 approach for explicit diffusion, i.e. diffusion_type = 0 (#1584)

v3.4.1

Features:

• Density check built into initialization for constant-density single-phase and two-phase flows
• Default bottom solver absolute tolerance added, improving speed
• Coupling ocean wave forcing with HOS-NWT enabled through new Waves2AMR capabilities
• Spatial offset between HOS wave data and AMR-Wind domain as user input

Fixes:

• Correction to treatment of explicit scalar (e.g., temperature) diffusion terms for non-unity density
• Working mass_inflow_outflow BC on multi-level cases through bug fix in AMReX-Hydro
• Proper usage of density for mass_inflow_outflow capability in anelastic flows
• Wave velocity, when using Waves2AMR, calculated correctly with offset in z

v3.4.0

Features:

• Meso-micro coupling with no precursor for terrain
• Anelastic implementation defines and uses reference temperature field
• Coupling to OpenFAST 4.0* enabled, compile time option
  • There are known bugs in OpenFAST 4.0.0 and 4.0.1 that affect the functionality coupled to AMR-Wind. These bugs are fixed in OpenFAST 4.0.2
  • When coupling to OpenFAST 4.0*, use OpenFAST 4.0.2 or newer
  • Detecting these problem versions cannot be done automatically with CMake, but the correct dependencies are built into spack and exawind-manager
• Underwater current enabled for linear waves, numerical beach
• Underwater terrain forcing (bathymetry) enabled through changes to ocean waves forcing and boundary conditions
• Ocean waves can be represented as moving terrain using immersed forcing
• Change to multiphase hybrid coupling – both projections
• Python tools added for manipulating boundary plane files
• More info output with native sampling

Fixes:

• Loosened tolerances for boundary plane asserts: avoids floating point issues
• Changes to allow vof as a boundary plane input variable
• Correcting linear interpolation in mesoscale forcing, ABL initialization
• Inflow boundary conditions corrected for wave simulations (smooth pressure field, better stability)
• Sampling fix for problems with more than 2 labels
• waves2amr bug fixes

v3.3.1

Improvements to:

• sampling outputs; now provides info file containing time
• boundary plane format; netCDF can now handle amr levels not coincident with lower edge

Bug fixes:

• correct interface position calculation for Stokes waves

v3.3.0

New Features:

• Forest Canopy Model

Improvements to:

• terrain drag, reducing memory needs

v3.2.3

New features:

• Visualization of native boundary files now possible
• Linear and Stokes ocean waves can be specified with a phase offset
• Numerical trapezoid integration available as utility within code

Bug fix:

• Overset simulations with ABL boundary planes now possible (again), now at times consistent with the time discretization

v3.2.2

New features:

• dynamic stress model added to wall models for representing wave fields
• adaptive mesh refinement based on integer fields

Improvements to:

• terrain blanking and ghost cells
• initial profile of ocean waves

Bug fixes:

• memory leaks in waves2amr framework
• treatment of target velocity from waves2amr
• physics post-regrid actions when restarting with new refinements