Functions
	_python_physics (monkeypatch)
	_series (times, mutate=None)
	burn ()
	test_exit_does_not_recede_on_a_non_ablative_nozzle (burn)
	test_exit_recedes_when_the_nozzle_is_ablative ()
	test_t0_geometry_is_the_design (burn)
	test_thrust_is_computed_on_the_geometry_pc_was_solved_on (burn)
	test_solver_reports_the_solved_efficiency ()
	test_a_thinner_insert_runs_hotter_and_recedes_faster ()
	test_liner_waits_for_its_ablation_temperature (burn)
	test_state_is_physical (burn)
	test_soak_back_after_shutdown ()
	test_legacy_geometry_helper_grows_from_the_declared_volume ()

Variables
	ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
	CFG = os.path.join(ROOT, "configs", "ethalox_6500N.yaml")
float	PSI = 6894.757293168361
float	P_TANK = 584.27 * PSI

Detailed Description

The time-varying solve's wall, geometry and bookkeeping (TH-6, TH-8, TH-9, CN-7, TH-12, TH-2).

What each test guards, and what the code did before:
  * the nozzle exit stayed put only on paper: it grew at the chamber liner's rate even with
    ``nozzle_ablative: false`` (eps rose 10 % over the burn);
  * t = 0 rebuilt the chamber as a full-bore cylinder of cg.length (L* 1.08 for a 1.00 design);
  * thrust used the post-step throat while Pc was solved on the pre-step one;
  * the graphite surface was the caller's 2000 K guess and the insert conducted steadily into a
    300 K sink, so a 3 mm and a 12 mm insert burned identically;
  * the state carried a 2 GW/m^2 "nozzle heat flux", an 86,000 K nozzle wall and 3e7 K case.

Function Documentation

◆ _python_physics()

test_time_varying_thermal._python_physics ( monkeypatch )

protected

Definition at line 32 of file test_time_varying_thermal.py.

◆ _series()

test_time_varying_thermal._series	(		times,
			mutate = None )

protected

Definition at line 36 of file test_time_varying_thermal.py.

Referenced by burn(), test_a_thinner_insert_runs_hotter_and_recedes_faster(), and test_exit_recedes_when_the_nozzle_is_ablative().

◆ burn()

test_time_varying_thermal.burn ( )

Definition at line 46 of file test_time_varying_thermal.py.

References _series().

◆ test_a_thinner_insert_runs_hotter_and_recedes_faster()

test_time_varying_thermal.test_a_thinner_insert_runs_hotter_and_recedes_faster ( )

Definition at line 108 of file test_time_varying_thermal.py.

References _series().

◆ test_exit_does_not_recede_on_a_non_ablative_nozzle()

test_time_varying_thermal.test_exit_does_not_recede_on_a_non_ablative_nozzle ( burn )

Definition at line 51 of file test_time_varying_thermal.py.

◆ test_exit_recedes_when_the_nozzle_is_ablative()

test_time_varying_thermal.test_exit_recedes_when_the_nozzle_is_ablative ( )

Definition at line 61 of file test_time_varying_thermal.py.

References _series().

◆ test_legacy_geometry_helper_grows_from_the_declared_volume()

test_time_varying_thermal.test_legacy_geometry_helper_grows_from_the_declared_volume ( )

The non-coupled path's helper: a micron of recession must not jump the volume to a
full-bore cylinder of cg.length (+8 % on this chamber).

Definition at line 163 of file test_time_varying_thermal.py.

◆ test_liner_waits_for_its_ablation_temperature()

test_time_varying_thermal.test_liner_waits_for_its_ablation_temperature ( burn )

The cold liner first has to heat to its ablation temperature -- semi-infinite onset
t = (pi/4) k rho c (T_abl - T0)^2 / q^2, a few tenths of a second here -- so the first
0.25 s recedes far less than steady ablation would; by 2 s it ablates at the Landau rate.

Definition at line 120 of file test_time_varying_thermal.py.