| """Compare archived free responses and geometry diagnostics without rescaling.""" |
| import json |
| from pathlib import Path |
| import numpy as np |
| import matplotlib |
| matplotlib.use('Agg') |
| import matplotlib.pyplot as plt |
|
|
| root=Path(__file__).resolve().parents[1]/'results/liquid_calibration_20261005' |
| cases=[('compact_weak','Newton Q1/Q1d, original'), |
| ('compact_weak_no_tension','Newton Q1/Q1d, zero tensile yield'), |
| ('B2_projected_weak','Newton B2/P0'), |
| ('Q1d_unilateral_fine2mm','Newton Q1/Q1d, zero tensile, 2 mm'), |
| ('physx_dt625','PhysX PBD, 0.625 ms')] |
| fig,ax=plt.subplots(1,2,figsize=(12.5,4.4),layout='constrained') |
| for case,label in cases: |
| report=json.loads((root/case/'report.json').read_text());rows=json.loads((root/case/'trajectory.json').read_text()) |
| end=report['args']['settle']+report['args']['motion_time'] |
| t=np.array([r['time'] for r in rows]);x=np.array([r['fluid_com_local'][0]*1000 for r in rows]) |
| h=np.array([r['center_height_ratio'] for r in rows]);mask=t>=end |
| ax[0].plot(t[mask]-end,x[mask],label=label,lw=1.6) |
| ax[1].plot(t,h,label=label,lw=1.6) |
| ax[0].set(xlabel='Time after cup stops (s)',ylabel='Fluid COM relative to cup, x (mm)',title='Free response: same 5 mm cup displacement') |
| ax[1].axhspan(.95,1.05,color='#2a9d8f',alpha=.13,label='Provisional 5% geometry band') |
| ax[1].set(xlabel='Simulation time (s)',ylabel='COM height / uniform-column reference',title='Geometry drift must also pass') |
| for panel in ax:panel.grid(alpha=.16) |
| ax[1].legend(fontsize=8,loc='lower left') |
| fig.suptitle('Fluid candidates: compare free response and geometry together',fontsize=13) |
| fig.savefig(root/'candidate_comparison.png',dpi=180) |
| fig.savefig(root/'candidate_comparison.pdf') |
| print(root/'candidate_comparison.png') |
|
|
