Merge branch 'surface_pressure_forces' of https://github.com/Arpit-Ba…

…bbar/Trixi.jl into ArpitBabbarForces

examples/p4est_2d_dgsem/elixir_euler_NACA0012airfoil_mach085.jl

@@ -12,7 +12,7 @@ equations = CompressibleEulerEquations2D(1.4)
 pre_inf() = 1.0
 rho_inf() = pre_inf() / (1.0 * 287.87) # pre_inf = 1.0,  T = 1, R = 287.87
 mach_inf() = 0.85
-aoa() = pi / 180.0
+aoa() = pi / 180.0 # 1 Degree angle of attack
 c_inf(equations) = sqrt(equations.gamma * pre_inf() / rho_inf())
 U_inf(equations) = mach_inf() * c_inf(equations)
 

examples/p4est_2d_dgsem/elixir_euler_subsonic_cylinder.jl

@@ -51,7 +51,7 @@ cells_per_dimension = (64, 64)
 # conditions there. However, the image of eta = -1, +1 coincides at the line y = 0. There is no
 # physical boundary there so we specify periodicity = true there and the solver treats the
 # element across eta = -1, +1 as neighbours which is what we want
-mesh = P4estMesh(cells_per_dimension, mapping = mapping2cylinder, polydeg = 3,
+mesh = P4estMesh(cells_per_dimension, mapping = mapping2cylinder, polydeg = polydeg,
                  periodicity = (false, true))
 
 # The boundary conditions of the outer cylinder is constant but subsonic, so we cannot compute the

test/test_p4est_2d.jl

@@ -584,7 +584,10 @@ end
                         base_level=0, med_level=1, max_level=1,
                         tspan=(0.0, 0.0001),
                         adapt_initial_condition=false,
-                        adapt_initial_condition_only_refine=false)
+                        adapt_initial_condition_only_refine=false,
+                        # With the default `maxiters = 1` in coverage tests,
+                        # the values for `drag` and `lift` below would differ.
+                        coverage_override=(maxiters = 100_000,))
 
     # Ensure that we do not have excessive memory allocations
     # (e.g., from type instabilities)
@@ -605,8 +608,6 @@ end
     lift = Trixi.analyze(lift_coefficient, du, u, tspan[2], mesh, equations, solver,
                          semi.cache)
 
-    @show analysis_callback(sol)
-
     @test isapprox(lift, 0.026397498239816828, atol = 1e-13)
     @test isapprox(drag, 0.10908833968266139, atol = 1e-13)
 end