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Changelog

Trixi.jl follows the interpretation of semantic versioning (semver) used in the Julia ecosystem. Notable changes will be documented in this file for human readability.

Changes in the v0.3 lifecycle

Added

  • Support for automatic differentiation, e.g. jacobian_ad_forward
  • In-situ visualization and post hoc visualization with Plots.jl
  • New systems of equations
    • multicomponent compressible Euler and MHD equations
    • acoustic perturbation equations
    • Lattice-Boltzmann equations
  • Composable FluxPlusDissipation and FluxLaxFriedrichs(), FluxHLL() with adaptable wave speed estimates were added in #493
  • New structured, curvilinear, conforming mesh type StructuredMesh
  • New unstructured, curvilinear, conforming mesh type UnstructuredMesh2D in 2D
  • New unstructured, curvilinear, adaptive (non-conforming) mesh type P4estMesh in 2D and 3D
  • Experimental support for finite difference (FD) summation-by-parts (SBP) methods via SummationByPartsOperators.jl
  • New support for modal DG and SBP-DG methods on triangular and tetrahedral meshes via StartUpDG.jl

Changed

  • flux_lax_friedrichs(u_ll, u_rr, orientation, equations::LatticeBoltzmannEquations2D) and flux_lax_friedrichs(u_ll, u_rr, orientation, equations::LatticeBoltzmannEquations3D) were actually using the logic of flux_godunov. Thus, they were renamed accordingly in #493. This is considered a bugfix (released in Trixi v0.3.22).
  • The required Julia version is updated to v1.6.

Deprecated

  • calcflux → flux (#463)
  • flux_upwind → flux_godunov
  • flux_hindenlang → flux_hindenlang_gassner
  • Providing the keyword argument solution_variables of SaveSolutionCallback as Symbol is deprecated in favor of using functions like cons2cons and cons2prim
  • varnames_cons(equations) → varnames(cons2cons, equations)
  • varnames_prim(equations) → varnames(cons2prim, equations)
  • The old interface for nonconservative terms is deprecated. In particular, passing only a single two-point numerical flux for nonconservative is deprecated. The new interface is described in a tutorial. Now, a tuple of two numerical fluxes of the form (conservative_flux, nonconservative_flux) needs to be passed for nonconservative equations, see #657.

Removed