Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
trixi-framework
GitHub Repository: trixi-framework/Trixi.jl
 Path: blob/main/examples/structured_2d_dgsem/elixir_eulermulti_convergence_ec.jl
2055 views
1
using OrdinaryDiffEqLowStorageRK

2
using Trixi

3


4
###############################################################################

5
# semidiscretization of the compressible Euler multicomponent equations

6
equations = CompressibleEulerMulticomponentEquations2D(gammas = (1.4, 1.4),

7
                                                       gas_constants = (0.4, 0.4))

8


9
initial_condition = initial_condition_convergence_test

10


11
volume_flux = flux_ranocha

12
solver = DGSEM(polydeg = 3, surface_flux = flux_ranocha,

13
               volume_integral = VolumeIntegralFluxDifferencing(volume_flux))

14


15
cells_per_dimension = (16, 16)

16
coordinates_min = (-1.0, -1.0)

17
coordinates_max = (1.0, 1.0)

18
mesh = StructuredMesh(cells_per_dimension, coordinates_min, coordinates_max)

19


20
semi = SemidiscretizationHyperbolic(mesh, equations, initial_condition, solver,

21
                                    source_terms = source_terms_convergence_test)

22


23
###############################################################################

24
# ODE solvers, callbacks etc.

25


26
tspan = (0.0, 0.4)

27
ode = semidiscretize(semi, tspan)

28


29
summary_callback = SummaryCallback()

30


31
analysis_interval = 100

32
analysis_callback = AnalysisCallback(semi, interval = analysis_interval)

33


34
alive_callback = AliveCallback(analysis_interval = analysis_interval)

35


36
save_solution = SaveSolutionCallback(interval = 100,

37
                                     save_initial_solution = true,

38
                                     save_final_solution = true,

39
                                     solution_variables = cons2prim)

40


41
stepsize_callback = StepsizeCallback(cfl = 0.5)

42


43
callbacks = CallbackSet(summary_callback,

44
                        analysis_callback, alive_callback,

45
                        save_solution,

46
                        stepsize_callback)

47


48
###############################################################################

49
# run the simulation

50


51
sol = solve(ode, CarpenterKennedy2N54(williamson_condition = false);

52
            dt = 1.0, # solve needs some value here but it will be overwritten by the stepsize_callback

53
            ode_default_options()..., callback = callbacks);

54


55