97 lines
3.1 KiB
Python
97 lines
3.1 KiB
Python
from __future__ import annotations
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import unittest
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from app.simulation.components.amesim.storage.chambers import AmesimPnch023
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from app.simulation.core.medium import IdealGasMedium
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from app.simulation.registry import COMPONENT_MODEL_REGISTRY
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class AmesimPnch023ComponentTests(unittest.TestCase):
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def setUp(self) -> None:
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self.medium = IdealGasMedium()
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def test_default_create_preserves_amesim_parameter_contract(self) -> None:
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chamber = COMPONENT_MODEL_REGISTRY["amesim_pnch023"].create(
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"chamber_1",
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self.medium,
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{},
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)
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self.assertIsInstance(chamber, AmesimPnch023)
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self.assertEqual(set(chamber.ports), {"port_1", "port_2"})
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self.assertEqual(
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set(chamber.parameter_values),
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{"cvol", "kth", "sth", "extemp", "gi", "p0", "T0"},
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)
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self.assertEqual(chamber.parameter_values["cvol"], 0.057)
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self.assertEqual(chamber.gi, 0)
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def test_rejects_fractional_gas_index(self) -> None:
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with self.assertRaisesRegex(ValueError, "gi must be an integer"):
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COMPONENT_MODEL_REGISTRY["amesim_pnch023"].create(
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"chamber_1",
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self.medium,
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{"gi": 1.5},
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)
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def test_initial_state_matches_requested_pressure_temperature(self) -> None:
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chamber = AmesimPnch023(
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"chamber_1",
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self.medium,
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cvol=0.057,
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p0=15300000.0,
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T0=293.15,
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)
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props = chamber.properties()
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self.assertAlmostEqual(props.p, 15300000.0)
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self.assertAlmostEqual(props.T, 293.15)
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self.assertAlmostEqual(chamber.port_1.p, props.p)
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self.assertAlmostEqual(chamber.port_2.p, props.p)
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def test_two_port_derivative_conserves_mass_and_adds_heat_transfer(self) -> None:
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chamber = AmesimPnch023(
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"chamber_1",
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self.medium,
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kth=10.0,
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sth=2.0,
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extemp=310.0,
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T0=300.0,
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)
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props = chamber.properties()
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chamber.port_1.m_flow = 0.2
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chamber.port_2.m_flow = -0.1
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derivative = chamber.state_derivative_from_ports(
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{
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"port_1": props.h + 1000.0,
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"port_2": props.h - 1000.0,
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}
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)
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self.assertAlmostEqual(derivative[0], 0.1)
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self.assertAlmostEqual(
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derivative[1],
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0.2 * (props.h + 1000.0) - 0.1 * props.h + 10.0 * 2.0 * 10.0,
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)
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def test_pressure_residuals_bind_both_ports_to_state(self) -> None:
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chamber = AmesimPnch023("chamber_1", self.medium, p0=200000.0, T0=300.0)
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chamber.port_1.p = 200100.0
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chamber.port_2.p = 199900.0
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residuals = {
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residual.id.rsplit(":", 1)[1]: residual
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for residual in chamber.pressure_flow_equation_residuals()
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}
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self.assertEqual(set(residuals), {"port_1_pressure_state", "port_2_pressure_state"})
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self.assertAlmostEqual(residuals["port_1_pressure_state"].value, 100.0)
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self.assertAlmostEqual(residuals["port_2_pressure_state"].value, -100.0)
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if __name__ == "__main__":
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unittest.main()
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