Capabilities and Roadmap
This section documents a non-exhaustive list of current AMR-Wind capabilities and roadmap for future capabilities.
Tip
If your project relies on a capability that is not yet present in AMR-Wind, please create an issue on the code project page.
Note
This reflects the capabilities for AMR-Wind version 2.1.0 and above.
Capabilities
Tip
The capabilities are linked to the relevant input file references (keyword inp) and documentation (keyword doc). Searching for those keywords in the test/test_files directory will give concrete examples of the feature usage.
Methods and models
Numerical methods
Advection: second order, piecewise parabolic, piecewise linear, WENO, Bell-Dawson-Shubin [doc, inp]
Diffusion: second order, explicit, Crank-Nicolson, and implicit [doc, inp]
Mesh refinement: static refinement for specified regions [inp], adaptive mesh refinement [inp] (e.g., field based, curvature, q-criterion, vorticity [inp])
Equations systems
Turbulence modeling
Transport models
Flow physics
Wind energy physics
Atmospheric boundary layer (ABL): various stability states (stable, unstable, neutral), precursor simulations with inflow boundary planes for wind farm simulations, anelastic formulation, mesoscale forcing, geostrophic forcing, Coriolis forcing, Monin-Obukhov similarity theory, gravity forcing, gravity wave damping [inp]
Actuator turbine representations: Joukowsky disks, uniform disks, actuator line [inp]
Coupling with OpenFAST
Coupling with Nalu-Wind for blade resolved simulations
Multiphase flows [doc]
Prescribed flow cases for verification of volume-of-fluid transport: Zalesak disk, vortex patch
Prescribed flow cases for verification of momentum equation coupled to volume-of-fluid transport: Zalesak disk scalar vel, vortex patch scalar vel
Validation and demonstration cases: sloshing tank, dam break, breaking waves, falling or inertial droplet
Methods to initialize volume-of-fluid field from an initial levelset field
Monitors conservation of mass and momentum
Ocean wave forcing (for multiphase flows) [inp]
Wave types: linear (monochromatic), Stokes (second to fifth order), irregular (input by modes files from HOS-Ocean)
Relaxation zones force wave profile to generate waves at lower x boundary or force toward quiescent flat interface at upper x boundary. Wave profile can also be enforced (instead of numerical beach) at upper x boundary for periodic simulations.
Boundary conditions
Geometry
Immersed boundary forcing method with stair-case type terrain and wall function [doc]
Coupling with Nalu-Wind for body-conforming meshes with overset methodology
Miscellaneous cases
Verification and validation cases: method of manufactured solutions, convecting Taylor-Vortex, Rayleigh-Taylor, passive scalar, Burggraf flow, channel flow, Ekman spiral, vortex dipole, vortex ring
Postprocessing
Visualization with VisIt, Paraview, yt
Sampling of fields with planes, point probes, lines, volumes, lidar, and radar [doc, inp]
Sampling of fields at probes that follow free surface of liquid-gas flows [inp]
Scalar outputs such as kinetic energy, enstrophy, total wave energy, and norms [doc, inp]
Turbulence averaging quantities such as Reynolds stresses [inp]
Field plane averaging and second and third order moments
Derived fields and field operators such as vorticity, q-criterion, strain-rates, gradients, divergence, Laplacian [inp]
in-situ post-processing with Ascent
High performance computing
Highly parallelized and performance portable
Shared memory parallelism with OpenMP threading
Distributed memory parallelism with MPI
Supports all major compilers (e.g., GCC, Intel, LLVM)
Runs on all major GPU vendors (NVIDIA, AMD, Intel)
Supported build systems: cmake, spack
Supported linear solvers
native AMReX solvers such as MLMG [inp]
hypre
Roadmap
The roadmap is an evolving, living document and does not purport to track every future capability. It is not a promise of future capabilities. The main use case is to inform users of potential upcoming new capabilities.
Current development
Inflow-outflow BCs to enable coupling amr-wind to ERF mesoscale modeling software
Temporal and spatial varying MMC forcing