Improve physical geometry, fluid solvers, audio, and profiling

engines/twin-270.toml

@@ -1,5 +1,5 @@
 # Engine definition. Dimensional keys state their units.
-schema_version = 1
+schema_version = 2
 id = "twin-270"
 name = "700 cc / 270-degree parallel twin"
 category = "Twins / parallel"
@@ -7,9 +7,11 @@ description = "Estimated concept calibration / EFI"
 order = 19
 cycle = "four_stroke"
 
+[simulation]
+cells_per_meter = 50.0
+
 [engine]
 bank_angle_deg = 60.0
-collector_volume_litres = 0.5
 cylinders = 2
 initial_rpm = 1400.0
 initialize_phased_charge = true
@@ -18,7 +20,6 @@ maximum_load_torque_nm = 30.0
 minimum_substeps = 1
 phase_degrees = [0.0, 450.0]
 pipe_damping = 1.0
-plenum_volume_litres = 2.0
 starter_torque_nm = 17.09026
 throttle_diameter_mm = 65.0
 topology = "collector"
@@ -31,18 +32,12 @@ burn_duration_deg = 60.0
 burn_start_deg = 5.0
 compression = 10.0
 energy_variation = 0.05
-exhaust_close_deg = 390.0
-exhaust_open_deg = 130.0
 exhaust_valve_count = 1
 exhaust_valve_diameter_mm = 25.6
-exhaust_valve_lift_mm = 7.2
 fuel_lhv_j_per_kg = 4.4e+07
 heat_transfer = 100.0
-intake_close_deg = 590.0
-intake_open_deg = 340.0
 intake_valve_count = 1
 intake_valve_diameter_mm = 30.4
-intake_valve_lift_mm = 8.0
 misfire_probability = 0.0
 rod_mm = 122.4
 stroke_mm = 68.0
@@ -101,26 +96,208 @@ system = "injection"
 
 [[pipes]]
 id = "intake"
-cells = 4
 diameter_mm = 75.0
-length_mm = 200.0
 
 [[pipes]]
 id = "runners"
 count = 2
-cells = 5
 diameter_mm = 35.0
-length_mm = 250.0
 
 [[pipes]]
 id = "primaries"
 count = 2
-cells = 13
 diameter_mm = 38.0
-length_mm = 650.0
 
 [[pipes]]
 id = "tailpipe"
-cells = 30
 diameter_mm = 60.0
-length_mm = 1500.0
+
+[cam.intake]
+points = [
+  [0.000, 0.000000],
+  [340.000, 0.000000],
+  [345.000, 0.145408],
+  [350.000, 0.548864],
+  [355.000, 1.161216],
+  [360.000, 1.933312],
+  [365.000, 2.816000],
+  [370.000, 3.760128],
+  [375.000, 4.716544],
+  [380.000, 5.636096],
+  [385.000, 6.469632],
+  [390.000, 7.168000],
+  [395.000, 7.682048],
+  [400.000, 7.962624],
+  [402.500, 8.000000],
+  [527.500, 8.000000],
+  [532.500, 7.854592],
+  [537.500, 7.451136],
+  [542.500, 6.838784],
+  [547.500, 6.066688],
+  [552.500, 5.184000],
+  [557.500, 4.239872],
+  [562.500, 3.283456],
+  [567.500, 2.363904],
+  [572.500, 1.530368],
+  [577.500, 0.832000],
+  [582.500, 0.317952],
+  [587.500, 0.037376],
+  [590.000, 0.000000],
+  [720.000, 0.000000]
+]
+
+[cam.exhaust]
+points = [
+  [0.000, 0.000000],
+  [130.000, 0.000000],
+  [135.000, 0.121256],
+  [140.000, 0.458807],
+  [145.000, 0.973327],
+  [150.000, 1.625489],
+  [155.000, 2.375967],
+  [160.000, 3.185435],
+  [165.000, 4.014565],
+  [170.000, 4.824033],
+  [175.000, 5.574511],
+  [180.000, 6.226673],
+  [185.000, 6.741193],
+  [190.000, 7.078744],
+  [195.000, 7.200000],
+  [325.000, 7.200000],
+  [330.000, 7.078744],
+  [335.000, 6.741193],
+  [340.000, 6.226673],
+  [345.000, 5.574511],
+  [350.000, 4.824033],
+  [355.000, 4.014565],
+  [360.000, 3.185435],
+  [365.000, 2.375967],
+  [370.000, 1.625489],
+  [375.000, 0.973327],
+  [380.000, 0.458807],
+  [385.000, 0.121256],
+  [390.000, 0.000000],
+  [720.000, 0.000000]
+]
+
+[valves.intake]
+mass_g = 35.0
+spring_rate_n_per_mm = 38.0
+damping_n_s_per_m = 24.0
+seat_force_n = 75.0
+maximum_lift_mm = 15.0
+seat_restitution = 0.005
+cam_restitution = 0.01
+stop_restitution = 0.01
+
+[valves.exhaust]
+mass_g = 35.0
+spring_rate_n_per_mm = 38.0
+damping_n_s_per_m = 24.0
+seat_force_n = 75.0
+maximum_lift_mm = 15.0
+seat_restitution = 0.005
+cam_restitution = 0.01
+stop_restitution = 0.01
+
+[valve_sound]
+mode_hz = 3600.0
+effective_mass_g = 180.0
+radiation_area_cm2 = 10.0
+damping_ratio = 0.9
+
+[[geometry.cylinders]]
+origin_mm = [ -49, 0, 0 ]
+tilt_deg = 0.0
+
+[[geometry.cylinders]]
+origin_mm = [ 49, 0, 0 ]
+tilt_deg = 0.0
+
+# intake
+[[geometry.pipes]]
+index = 0
+points_mm = [
+  [ -298, 155.9556, -354 ],
+  [ -98, 155.9556, -354 ]
+]
+
+# runners 1
+[[geometry.pipes]]
+index = 1
+points_mm = [
+  [ -49, 155.9556, -282 ],
+  [ -49, 155.9556, -32 ]
+]
+
+# runners 2
+[[geometry.pipes]]
+index = 2
+points_mm = [
+  [ 49, 155.9556, -282 ],
+  [ 49, 155.9556, -32 ]
+]
+
+# primaries 1
+[[geometry.pipes]]
+index = 3
+points_mm = [
+  [ -49, 155.9556, 40 ],
+  [ -47.6414, 152.9696, 53.5851 ],
+  [ -43.8021, 148.472, 65.1692 ],
+  [ -37.8363, 142.566, 74.9076 ],
+  [ -30.0984, 135.3552, 82.9554 ],
+  [ -20.943, 126.9429, 89.4678 ],
+  [ -10.7243, 117.4325, 94.5999 ],
+  [ 0.2032, 106.9274, 98.5068 ],
+  [ 11.485, 95.5311, 101.3437 ],
+  [ 22.7669, 83.347, 103.2658 ],
+  [ 33.6944, 70.4784, 104.4283 ],
+  [ 43.913, 57.0288, 104.9862 ],
+  [ 53.0685, 43.1016, 105.0948 ],
+  [ 60.8063, 28.8002, 104.9091 ],
+  [ 66.7721, 14.2281, 104.5844 ],
+  [ 70.6115, -0.5115, 104.2758 ],
+  [ 71.9701, -15.315, 104.1385 ]
+]
+
+# primaries 2
+[[geometry.pipes]]
+index = 4
+points_mm = [
+  [ 49, 155.9556, 40 ],
+  [ 49.465, 153.1235, 51.7218 ],
+  [ 50.7792, 148.49, 61.9229 ],
+  [ 52.8211, 142.2161, 70.709 ],
+  [ 55.4697, 134.4629, 78.1854 ],
+  [ 58.6034, 125.3916, 84.4576 ],
+  [ 62.1011, 115.1632, 89.631 ],
+  [ 65.8413, 103.9388, 93.8112 ],
+  [ 69.7029, 91.8796, 97.1037 ],
+  [ 73.5645, 79.1467, 99.6138 ],
+  [ 77.3048, 65.9012, 101.447 ],
+  [ 80.8024, 52.3041, 102.7088 ],
+  [ 83.9362, 38.5167, 103.5048 ],
+  [ 86.5847, 24.6999, 103.9402 ],
+  [ 88.6267, 11.015, 104.1207 ],
+  [ 89.9409, -2.377, 104.1516 ],
+  [ 90.4059, -15.315, 104.1385 ]
+]
+
+# tailpipe
+[[geometry.pipes]]
+index = 5
+points_mm = [
+  [ 139.685, -55, 119 ],
+  [ 1639.685, -55, 119 ]
+]
+
+[[geometry.volumes]]
+id = "intake_plenum"
+center_mm = [ 0, 155.9556, -354 ]
+size_mm = [ 196, 70.8617, 144 ]
+
+[[geometry.volumes]]
+id = "exhaust_collector"
+center_mm = [ 100, -55, 119 ]
+size_mm = [ 79.3701, 79.3701, 79.3701 ]