{"artifact_id":"L1-192","layer":"L1","title":"Buckley-Leverett — two-phase displacement saturation","domain":"Fluid Dynamics","sub_domain":"Buckley-Leverett in petroleum reservoirs","physics_fingerprint":{"L_DAG":3.0,"title":"Buckley-Leverett — two-phase displacement saturation","domain":"Fluid Dynamics","carrier":"mechanical","primitives":["L.flux_function","L.shock_admissible","L.fractional_flow","int.temporal"],"sub_domain":"Buckley-Leverett in petroleum reservoirs","noise_model":"gaussian","problem_class":"linear_inverse","solution_space":"saturation_shock","difficulty_delta":3,"integration_axis":"temporal","sensing_mechanism":"well_production"},"observable_profile":{"metric":"PSNR_dB","regime":"Conditional stability; mismatch parameters dominate at Omega bounds.","secondary":"SSIM"},"size_tiers":{"center_spec":{"omega":{"SNR_dB":30,"N_cells":100,"N_times":1000,"relperm_error":0.0,"capillary_error":0.0,"mobility_ratio_error":0.0},"input_format":"measurement_only","problem_class":"bl","forward_operator":"bl_forward","epsilon_fn_center":"24.0"},"omega_bounds":{"SNR_dB":[0,40],"N_cells":[10,100000],"N_times":[100,100000],"relperm_error":[0.0,0.3],"capillary_error":[0.0,0.3],"mobility_ratio_error":[0.0,0.2]},"epsilon_bounds":{"psnr_db":[10.0,45.0]},"allowed_problem_classes":["bl"],"allowed_omega_dimensions":["N_cells","N_times","SNR_dB","relperm_error","capillary_error","mobility_ratio_error","relperm_error","capillary_error","mobility_ratio_error"],"allowed_forward_operators":["bl_forward"]},"hardness_fn":{"type":"epsilon_fn","delta":3,"kappa":300,"metric":"PSNR_dB"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0xb5d96e0f7bd9783b2718a08a9ec3928333aea9fca4152e3c8fbabdacaad67e69","chain_tx_hash":"0x0af50dc66db6aeccdff0295e67dcff4107b9391b886e495aefa182b796ae97a1","chain_block":41553978}