1. 11 Dec, 2020 1 commit
    • Vaggelis Papoutsis's avatar
      ENH: deprecation of fvOptionsAdjoint · 95748b01
      Vaggelis Papoutsis authored
      fvOptionsAdjoint was needlessly duplicating a lot of the functionality
      of fvOptions in order to add an interface for computing sensitivity
      contributions emerging from fvOptions. To reduce this code duplication:
      - fvOptionsAdjoint was removed
      - the corresponding sensitivity contributions have moved to fvOptions through
        virtual functions (returning a zero contribution in the base so
        backwards compatibility is retained)
      - all sensitivity classes that were using fvOptionsAdjoint have been
        modified appropriately
      - all adjoint solvers are now grabbing a reference to an fvOptionList
        from the database instead of constructing an fvOptionsAdjointList
      Hence, all fvOptions contributions to the adjoint equations
      or the sensitivity derivatives can be given through system/fvOptions,
      removing the need for separate sub-dictionaries within optimisationDict.
  2. 12 Jun, 2020 2 commits
  3. 04 May, 2020 1 commit
  4. 12 Dec, 2019 2 commits
    • Vaggelis Papoutsis's avatar
      COMP: BFGS and SR1 failed to compile with SP · db8a8404
      Vaggelis Papoutsis authored
      - Failed due to double*Matrix<float> multiplication.
      Style changes
      - use SquareMatrix with Identity on construction
      - use Zero in constructors
      - remove trailing space and semi-colons
    • Vaggelis Papoutsis's avatar
      ENH: New adjont shape optimisation functionality · b8632543
      Vaggelis Papoutsis authored
      The adjoint library is enhanced with new functionality enabling
      automated shape optimisation loops.  A parameterisation scheme based on
      volumetric B-Splines is introduced, the control points of which act as
      the design variables in the optimisation loop [1, 2].  The control
      points of the volumetric B-Splines boxes can be defined in either
      Cartesian or cylindrical coordinates.
      The entire loop (solution of the flow and adjoint equations, computation
      of sensitivity derivatives, update of the design variables and mesh) is
      run within adjointOptimisationFoam. A number of methods to update the
      design variables are implemented, including popular Quasi-Newton methods
      like BFGS and methods capable of handling constraints like loop using
      the SQP or constraint projection.
      The software was developed by PCOpt/NTUA and FOSS GP, with contributions from
      Dr. Evangelos Papoutsis-Kiachagias,
      Konstantinos Gkaragounis,
      Professor Kyriakos Giannakoglou,
      Andy Heather
      [1] E.M. Papoutsis-Kiachagias, N. Magoulas, J. Mueller, C. Othmer,
      K.C.  Giannakoglou: 'Noise Reduction in Car Aerodynamics using a
      Surrogate Objective Function and the Continuous  Adjoint Method with
      Wall Functions', Computers & Fluids, 122:223-232, 2015
      [2] E. M. Papoutsis-Kiachagias, V. G. Asouti, K. C. Giannakoglou,
      K.  Gkagkas, S. Shimokawa, E. Itakura: ‘Multi-point aerodynamic shape
      optimization of cars based on continuous adjoint’, Structural and
      Multidisciplinary Optimization, 59(2):675–694, 2019
  5. 31 Oct, 2019 1 commit
  6. 17 Jun, 2019 1 commit
    • Vaggelis Papoutsis's avatar
      CONTRIB: New adjoint optimisation and tools · ecc1fb5e
      Vaggelis Papoutsis authored
      A set of libraries and executables creating a workflow for performing
      gradient-based optimisation loops. The main executable (adjointOptimisationFoam)
      solves the flow (primal) equations, followed by the adjoint equations and,
      eventually, the computation of sensitivity derivatives.
      Current functionality supports the solution of the adjoint equations for
      incompressible turbulent flows, including the adjoint to the Spalart-Allmaras
      turbulence model and the adjoint to the nutUSpaldingWallFunction, [1], [2].
      Sensitivity derivatives are computed with respect to the normal displacement of
      boundary wall nodes/faces (the so-called sensitivity maps) following the
      Enhanced Surface Integrals (E-SI) formulation, [3].
      The software was developed by PCOpt/NTUA and FOSS GP, with contributions from
      Dr. Evangelos Papoutsis-Kiachagias,
      Konstantinos Gkaragounis,
      Professor Kyriakos Giannakoglou,
      Andy Heather
      and contributions in earlier version from
      Dr. Ioannis Kavvadias,
      Dr. Alexandros Zymaris,
      Dr. Dimitrios Papadimitriou
      [1] A.S. Zymaris, D.I. Papadimitriou, K.C. Giannakoglou, and C. Othmer.
      Continuous adjoint approach to the Spalart-Allmaras turbulence model for
      incompressible flows. Computers & Fluids, 38(8):1528–1538, 2009.
      [2] E.M. Papoutsis-Kiachagias and K.C. Giannakoglou. Continuous adjoint methods
      for turbulent flows, applied to shape and topology optimization: Industrial
      applications. 23(2):255–299, 2016.
      [3] I.S. Kavvadias, E.M. Papoutsis-Kiachagias, and K.C. Giannakoglou. On the
      proper treatment of grid sensitivities in continuous adjoint methods for shape
      optimization. Journal of Computational Physics, 301:1–18, 2015.
      Integration into the official OpenFOAM release by OpenCFD
  7. 07 Jun, 2019 1 commit
    • Sergio Ferraris's avatar
      INT: Org integration of VOF, Euler phase solvers and models. · 8170f2ad
      Sergio Ferraris authored
      Integration of VOF MULES new interfaces. Update of VOF solvers and all instances
      of MULES in the code.
      Integration of reactingTwoPhaseEuler and reactingMultiphaseEuler solvers and sub-models
      Updating reactingEuler tutorials accordingly (most of them tested)
      New eRefConst thermo used in tutorials. Some modifications at thermo specie level
      affecting mostly eThermo. hThermo mostly unaffected
      New chtMultiRegionTwoPhaseEulerFoam solver for quenching and tutorial.
      Phases sub-models for reactingTwoPhaseEuler and reactingMultiphaseEuler were moved
      to src/phaseSystemModels/reactingEulerFoam in order to be used by BC for
      Update of interCondensatingEvaporatingFoam solver.
  8. 06 Feb, 2019 1 commit
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  11. 12 Jun, 2015 1 commit
    • Henry Weller's avatar
      reactingTwoPhaseEulerFoam: New twoPhaseEulerFoam supporting mass-transfer and reactions · eb53f9bd
      Henry Weller authored
      Multi-species, mass-transfer and reaction support and multi-phase
      structure provided by William Bainbridge.
      Integration of the latest p-U and face-p_U algorithms with William's
      multi-phase structure is not quite complete due to design
      incompatibilities which needs further development.  However the
      integration of the functionality is complete.
      The results of the tutorials are not exactly the same for the
      twoPhaseEulerFoam and reactingTwoPhaseEulerFoam solvers but are very
      similar.  Further analysis in needed to ensure these differences are
      physical or to resolve them; in the meantime the twoPhaseEulerFoam
      solver will be maintained.
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