2046dcba10
- components/schema.py + database.py: typed loader for real retail parts (wire, capacitors, switches, sensors, projectile materials) - physics/inductance.py: multilayer solenoid inductance (Wheeler) with ferromagnetic-slug coupling via smooth overlap model and analytic dL/dx - physics/force.py: F = 0.5*I^2*dL/dx with a saturation clamp - physics/circuit.py: coupled [Q,I,x,v] discharge ODE - Validated against textbook RLC analytical solutions (under/over/critically damped) and energy conservation, not just spot-checked by eye - PLAN.md updated with animation (per-run field visualization) and GPU-accelerated batch sweep as explicit later stages Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
36 lines
1.4 KiB
Python
36 lines
1.4 KiB
Python
import pytest
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from gausse.physics.force import (
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force_on_slug_newtons,
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saturation_scale,
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solenoid_field_estimate_tesla,
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)
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def test_field_estimate_scales_with_current_and_turns():
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b_low = solenoid_field_estimate_tesla(mu_eff=100, total_turns=100, coil_length_m=0.05, current_a=10)
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b_high = solenoid_field_estimate_tesla(mu_eff=100, total_turns=100, coil_length_m=0.05, current_a=100)
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assert b_high > b_low
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def test_saturation_scale_is_one_below_bsat():
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assert saturation_scale(b_estimate_tesla=0.5, b_sat_tesla=1.8) == pytest.approx(1.0)
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def test_saturation_scale_clamps_above_bsat():
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scale = saturation_scale(b_estimate_tesla=3.6, b_sat_tesla=1.8)
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assert scale == pytest.approx(0.5)
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def test_force_is_reduced_once_saturated():
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common = dict(dl_dx_unsaturated=1e-3, mu_eff=200, total_turns=300, coil_length_m=0.05, b_sat_tesla=1.8)
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force_unsaturated = force_on_slug_newtons(current_a=5, **common)
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force_saturated = force_on_slug_newtons(current_a=500, **common)
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# без клэмпа сила росла бы как I^2 (в 10000 раз); с насыщением рост должен быть намного меньше
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assert force_saturated / force_unsaturated < 5000
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def test_force_zero_at_zero_current():
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common = dict(dl_dx_unsaturated=1e-3, mu_eff=200, total_turns=300, coil_length_m=0.05, b_sat_tesla=1.8)
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assert force_on_slug_newtons(current_a=0, **common) == pytest.approx(0.0)
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