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  1. Oct 22, 2020
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  5. Jun 11, 2020
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  7. Jun 09, 2020
    • Kutalmış Berçin's avatar
      ENH: New atmospheric boundary layer (ABL) model suite (Part 1) · 41e264f2
      Kutalmış Berçin authored and Andrew Heather's avatar Andrew Heather committed
        Please refer to the header file documentation for complete set of details.
      
        ENH: add new fvOptions for ABL modelling
      
          - atmAmbientTurbSource
          - atmBuoyancyTurbSource
          - atmCoriolisUSource
          - atmLengthScaleTurbSource
          - atmPlantCanopyTurbSource
          - atmPlantCanopyUSource
          - atmPlantCanopyTSource
          - atmNutSource
      
        ENH: add new boundary conditions for ABL modelling
             with PatchFunction1 and TimeFunction1 support
      
          - atmAlphatkWallFunction
          - atmEpsilonWallFunction
          - atmNutkWallFunction
          - atmNutUWallFunction
          - atmNutWallFunction
          - atmOmegaWallFunction
          - atmTurbulentHeatFluxTemperature
      
        STYLE: change names of nutkAtmRoughWallFunction -> atmNutkWallFunction by
               ensuring the bitwise backward compatibility
      
        ENH: add new variable-scaling force computation method to actuationDiskSource
      
        ENH: review actuationDiskSource and radialActuationDiskSource
      
        ENH: add new function object, ObukhovLength
      
        ENH: add new ABL tutorials/verifications
      
          - verificationAndValidation/atmosphericModels/atmFlatTerrain
            - verification with the Leipzig field experiment
            - illustration of precursor/successor field mapping
          - verificationAndValidation/atmosphericModels/atmForestStability
            - verification with the Sweden field experiment
          - update incompressible/simpleFoam/turbineSiting
      41e264f2
  8. Jun 05, 2020
    • Kutalmış Berçin's avatar
      ENH: improve/verify atmBoundaryLayerInlet conditions · 336fb3bd
      Kutalmış Berçin authored and Andrew Heather's avatar Andrew Heather committed
        ENH: add generalised log-law type ground-normal inflow boundary conditions for
        wind velocity and turbulence quantities for homogeneous, two-dimensional,
        dry-air, equilibrium and neutral atmospheric boundary layer (ABL) modelling
      
        ENH: remove `zGround` entry, which is now automatically computed
      
        ENH: add `displacement height` entry, `d`
      
        ENH: add generalised atmBoundaryLayerInletOmega boundary condition
      
        ENH: add a verification case for atmBoundaryLayerInlet BCs
      
        DOC: improve atmBoundaryLayerInlet header documentation
      
        BUG: fix value-entry behaviour in atmBoundaryLayerInlet (fixes #1578)
        Without this change:
        - for serial-parallel computations, if `value` entry is available in
          an `atmBoundaryLayerInlet` BC, the theoretical ABL profile expressions
          are not computed, and the `value` entry content is used as a profile data
        - for parallel computations, if `value` entry is not available, `decomposePar`
          could not be executed.
        With this change:
        - assuming `value` entry is always be present, the use of `value` entry for
          the ABL profile specification is determined by a flag `initABL`
        - the default value of the optional flag `initABL` is `true`, but whenever
          `initABL=true` is executed, `initABL` is overwritten as `false` for the
          subsequent runs, so that `value` entry can be safely used.
        Thanks Per Jørgensen for the bug report.
      
        BUG: ensure atmBoundaryInlet conditions are Galilean-invariant (fixes #1692)
      
        Related references:
      
            The ground-normal profile expressions (tag:RH):
              Richards, P. J., & Hoxey, R. P. (1993).
              Appropriate boundary conditions for computational wind
              engineering models using the k-ε turbulence model.
              In Computational Wind Engineering 1 (pp. 145-153).
              DOI:10.1016/B978-0-444-81688-7.50018-8
      
          Modifications to preserve the profiles downstream (tag:HW):
              Hargreaves, D. M., & Wright, N. G. (2007).
              On the use of the k–ε model in commercial CFD software
              to model the neutral atmospheric boundary layer.
              Journal of wind engineering and
              industrial aerodynamics, 95(5), 355-369.
              DOI:10.1016/j.jweia.2006.08.002
      
          Expression generalisations to allow height
          variation for turbulence quantities (tag:YGCJ):
              Yang, Y., Gu, M., Chen, S., & Jin, X. (2009).
              New inflow boundary conditions for modelling the neutral equilibrium
              atmospheric boundary layer in computational wind engineering.
              J. of Wind Engineering and Industrial Aerodynamics, 97(2), 88-95.
              DOI:10.1016/j.jweia.2008.12.001
      
          The generalised ground-normal profile expression for omega (tag:YGJ):
              Yang, Y., Gu, M., & Jin, X., (2009).
              New inflow boundary conditions for modelling the
              neutral equilibrium atmospheric boundary layer in SST k-ω model.
              In: The Seventh Asia-Pacific Conference on Wind Engineering,
              November 8-12, Taipei, Taiwan.
      
        Reproduced benchmark:
            Rectangular prism shown in FIG 1 of
              Hargreaves, D. M., & Wright, N. G. (2007).
              On the use of the k–ε model in commercial CFD software
              to model the neutral atmospheric boundary layer.
              Journal of wind engineering and
              industrial aerodynamics, 95(5), 355-369.
              DOI:10.1016/j.jweia.2006.08.002
        Benchmark data:
            HW, 2007 FIG 6
      
        TUT: update simpleFoam/turbineSiting tutorial accordingly
      336fb3bd