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Avoid allocations in boundary flux for parabolic RHS #1594

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Aug 8, 2023
Merged

Avoid allocations in boundary flux for parabolic RHS #1594

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c1db7ac
Remove doubled implementations
DanielDoehring Jul 28, 2023
be3b067
kepp main updated with true main
DanielDoehring Jul 28, 2023
06a4196
Avoid allocations in parabolic boundary fluxes
DanielDoehring Jul 31, 2023
7f9c752
Merge branch 'main' into main
DanielDoehring Jul 31, 2023
40b2796
Correct shear layer IC
DanielDoehring Aug 3, 2023
80519b1
Whitespaces
DanielDoehring Aug 7, 2023
5638a01
Update examples/tree_2d_dgsem/elixir_navierstokes_convergence.jl
DanielDoehring Aug 8, 2023
034c53c
Update examples/tree_3d_dgsem/elixir_navierstokes_convergence.jl
DanielDoehring Aug 8, 2023
d1e4dad
Merge branch 'main' into main
DanielDoehring Aug 8, 2023
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3 changes: 2 additions & 1 deletion examples/tree_2d_dgsem/elixir_navierstokes_convergence.jl
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Expand Up @@ -170,7 +170,8 @@ end
initial_condition = initial_condition_navier_stokes_convergence_test

# BC types
velocity_bc_top_bottom = NoSlip((x, t, equations) -> initial_condition_navier_stokes_convergence_test(x, t, equations)[2:3])
velocity_bc_top_bottom = NoSlip((x, t, equations) -> SVector(initial_condition_navier_stokes_convergence_test(x, t, equations)[2],
initial_condition_navier_stokes_convergence_test(x, t, equations)[3]))
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heat_bc_top_bottom = Adiabatic((x, t, equations) -> 0.0)
boundary_condition_top_bottom = BoundaryConditionNavierStokesWall(velocity_bc_top_bottom, heat_bc_top_bottom)

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6 changes: 4 additions & 2 deletions examples/tree_2d_dgsem/elixir_navierstokes_shear_layer.jl
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Expand Up @@ -14,14 +14,16 @@ equations_parabolic = CompressibleNavierStokesDiffusion2D(equations, mu=mu(),
Prandtl=prandtl_number())

function initial_condition_shear_layer(x, t, equations::CompressibleEulerEquations2D)
# Shear layer parameters
k = 80
delta = 0.05
u0 = 1.0

Ms = 0.1 # maximum Mach number

rho = 1.0
v1 = x[2] <= 0.5 ? u0*tanh(k*(x[2]*0.5 - 0.25)) : tanh(k*(0.75 -x[2]*0.5))
v2 = u0*delta * sin(2*pi*(x[1]*0.5 + 0.25))
v1 = x[2] <= 0.5 ? u0 * tanh(k*(x[2]*0.5 - 0.25)) : u0 * tanh(k*(0.75 -x[2]*0.5))
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v2 = u0 * delta * sin(2*pi*(x[1]*0.5 + 0.25))
p = (u0 / Ms)^2 * rho / equations.gamma # scaling to get Ms

return prim2cons(SVector(rho, v1, v2, p), equations)
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5 changes: 4 additions & 1 deletion examples/tree_3d_dgsem/elixir_navierstokes_convergence.jl
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Expand Up @@ -220,7 +220,10 @@ end
initial_condition = initial_condition_navier_stokes_convergence_test

# BC types
velocity_bc_top_bottom = NoSlip((x, t, equations) -> initial_condition_navier_stokes_convergence_test(x, t, equations)[2:4])
velocity_bc_top_bottom = NoSlip((x, t, equations) -> SVector(initial_condition_navier_stokes_convergence_test(x, t, equations)[2],
initial_condition_navier_stokes_convergence_test(x, t, equations)[3],
initial_condition_navier_stokes_convergence_test(x, t, equations)[4])
)
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heat_bc_top_bottom = Adiabatic((x, t, equations) -> 0.0)
boundary_condition_top_bottom = BoundaryConditionNavierStokesWall(velocity_bc_top_bottom, heat_bc_top_bottom)

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