News

10/2019

  • New article submission : A. M. D. Jost and S. Glockner, Direct forcing immersed boundary method: Improvements to the Ghost Node Method. Submitted to Journal of Computational Physics. 2019. (pdf).

06/2019

  • New article submission: T. Milcent, A. Lemoine. Moment-of-Fluid Analytic Reconstruction on 3D Rectangular Hexahedrons. Submitted to Journal of Computational Physics. 2019. (pdf).
  • EnSight Gold format can be used to visualize Notus output.

03/2019 0.3.0 release

  • NTS files
    • Validation of the code
      • new validation script notus.py that includes parametric validation (@PARAMETER)
      • cleanup of some test case files (reference solution, initialization, source term can be written in the NTS file)
    • Material block (solid, fluid). Phase initialization is independent of phase advection.
    • Immersed boundary (by equation, several immersed boundaries now possible)
    • Time step: fixed or adaptive
    • Post processing
      • print fields on a set of probe points and/or lines
      • Boundary condition:
      • line_segment (2D) and rectangle/circle (3D) shapes
    • Robin boundary condition (for scalar equation)
    • Checkpoint/restart
      • use of ADIOS bp files (it is possible to restart with a different number of processors)
      • initialization of a simple field thanks to a bp file
      • It is possible to set the final time instead of the number of iterations
  • DOC
    • Improve documentation : installation guide, howtos, best practices, detailed numerical schemes, etc.
  • MULTIPHASE
    • MOF 2D : filament treatment
    • MOF 3D : polyhedron flood algorithm, polyhedron clipping algorithm
    • Stable and accurate advanced Level Set methods (advection, reinitialization: eikonal, HCR2)
    • Front tracking interface representation: coupling with FronTier (C++) library for 2D flows with surface tension
  • IMMERSED BOUNDARIES
    • 2D and 3D improvements
    • SBDF2 method for advection terms (NS, energy, species) coupled with high-order explicit schemes (WENO3, WENO5), various fluxes (Godunov, LW, FLIC, FORCE) and NSSP time integration schemes.
    • New interpolation/reconstruction/finite difference schemes (generic Lagrange, WENO, Peskin, etc.)
  • MISCELLANEOUS
    • 2D asymmetric (Navier-Stokes, Energy, Level-set)
    • Add a Poisson equation (used to initialize hydrostatic pressure)
    • Renaming of some variables, routines
    • MPI exchange on edges
    • Experimental works: generic lagrangian particles and semi-lagrangian advection schemes
    • New test cases added
    • Notus can ben run from any directory (if included in PATH variable)
    • New structures for boundary conditions
    • New objects (torus, half space)
  • ... and some bugs fixed here and there.
 

12/2018 New open positions! Three internships granted: see offers

11/2017 New open position offer

07/2017 Coupling with LIS library of solvers and preconditioners (some scalability tests)

01/2017 0.2.0 public release (beta version)

01/2016 0.1.0 release

09/2015 Web site creation

01/2015 Start of the project