Functions
	inlet_profile (H, S, nz, U_in)

	reattach (u_bottom)

	bfs (S, Re, dt, mode, Lr=12, U_in=1.0, nz=4, max_steps=6000, tol=2e-5, vcyc=4, vel_iter=60, outer=2)

	main ()

Detailed Description

Velocity-MG benchmark on the backward-facing step (high-resolution 2D; BFS is a channel, not a cube).

Same two questions as the cavity bench: does the velocity-MG (a) speed up the march to steady at high
resolution, and (b) stay free of any dt restriction (no immersed solid -> geometry-exact coarse operator)?
Re_S = U_in*S/nu; the step is the inlet condition (set_domain_bc_profile), +x outflow, -y/+y no-slip walls.

Function Documentation

◆ inlet_profile()

bench_velocity_mg_bfs.inlet_profile	(	H,
		S,
		nz,
		U_in
	)

Definition at line 19 of file bench_velocity_mg_bfs.py.

Referenced by bfs().

◆ reattach()

bench_velocity_mg_bfs.reattach ( u_bottom )

Definition at line 28 of file bench_velocity_mg_bfs.py.

Referenced by bfs().

◆ bfs()

bench_velocity_mg_bfs.bfs	(	S,
		Re,
		dt,
		mode,
		Lr = `12`,
		U_in = `1.0`,
		nz = `4`,
		max_steps = `6000`,
		tol = `2e-5`,
		vcyc = `4`,
		vel_iter = `60`,
		outer = `2`
	)

Definition at line 38 of file bench_velocity_mg_bfs.py.

References inlet_profile(), and reattach().

Referenced by main().

◆ main()

bench_velocity_mg_bfs.main ( )

Definition at line 67 of file bench_velocity_mg_bfs.py.

References bfs(), and main().