{
  "schema": "aero.publication_benchmark_summary.v1",
  "case_id": "PCHE-SAMARMAD-PUBLICATION-01",
  "title": "Samarmad PCHE — frozen numerical fail and post-reveal comparison",
  "revision": "v1",
  "source": {
    "citation": "Samarmad and Jaffal (2023), Results in Engineering 19, 101303",
    "doi": "10.1016/j.rineng.2023.101303",
    "source_url": "https://doi.org/10.1016/j.rineng.2023.101303",
    "author_upload_url": "https://www.researchgate.net/publication/372453246_Performance_evaluation_of_a_printed_circuit_heat_exchanger_with_a_novel_two-way_corrugated_channel",
    "reported_license": "CC BY-NC-ND 4.0",
    "public_artifact_policy": "No article PDF, source text, figure, table, or digitized experimental point values are redistributed. Commercial reuse is not cleared."
  },
  "status": {
    "prediction_package": "FROZEN_AND_INDEPENDENTLY_HASH_VERIFIED",
    "openfoam_numerical_disposition": "FAIL",
    "calculix_source_validation": "NOT_SUPPORTED_BY_SOURCE",
    "calculix_exploratory_mesh_sensitivity": "FAIL_MAPPING_COVERAGE",
    "publication_measurement_reveal": "REVEALED_AFTER_FREEZE; COMPARISON_UNSCORED",
    "full_blindness": false
  },
  "pre_reveal_prediction": {
    "geometry": "Independent reconstruction of one periodic Model 6 corrugated channel cell; not author CAD",
    "analysis_point": {
      "hot_inlet_K": 323.0,
      "cold_inlet_K": 293.0,
      "velocity_m_s_each_stream": 0.246,
      "experimental_condition_match": "NOT_ESTABLISHED"
    },
    "first_principles_straight_channel_screen": {
      "Re": 519.1182,
      "hydraulic_diameter_m": 0.00152754,
      "pressure_drop_Pa_per_channel": 576.198,
      "heat_duty_W_per_channel_pair_range": [27.4614, 30.9006],
      "effectiveness_range": [0.3650, 0.4107],
      "scope": "Straight fully-developed semicircle screening only; not a corrugated Model 6 prediction."
    }
  },
  "openfoam_v10_at_250_s": {
    "tetrahedra": {"coarse": 494670, "medium": 1003677, "fine": 2770939},
    "all_region_checkMesh": "PASS",
    "mass_balance": "PASS on all three grids; maximum imbalance 0.0896% against 0.5%",
    "hot_cold_energy_balance": "PASS on all three grids; maximum imbalance 3.6715% against 5%",
    "max_final_residual": {
      "coarse": 0.00021375007,
      "medium": 0.0000057687564,
      "fine": 0.0000066988823,
      "frozen_limit": 0.000001,
      "gate": "FAIL on all three grids"
    },
    "medium_to_fine_relative_change_percent": {
      "hot_pressure_drop": 22.6121,
      "cold_pressure_drop": 22.1682,
      "hot_heat_duty": 1.7846,
      "cold_heat_duty": 2.7776,
      "hot_outlet_temperature": 0.0207,
      "cold_outlet_temperature": 0.0325,
      "pressure_drop_grid_gate_limit": 5.0
    },
    "overall_numerical_disposition": "FAIL"
  },
  "calculix": {
    "paper_has_structural_model_or_measurement": false,
    "v1_three_grid_transfer_coverage_percent": {
      "coarse": 92.94996,
      "medium": 94.55602,
      "fine": 99.99762,
      "required": 100.0
    },
    "v1_mapping_gate": "FAIL; no mesh-sensitivity decks generated",
    "interpretation": "A prior single assumption-only pipeline shakedown is retained locally; it is not a Samarmad structural prediction or validation."
  },
  "freeze": {
    "file_count": 653,
    "inventory_sha256": "9f34e3f2615437fe15c61b60b36fcddb671ca09cdecd0739689201494437e92d",
    "manifest_sha256": "e09516c5946190b72e29009f0bc3f99ae3f7586c2c29e89e3f9dc02539e07cfb",
    "inventory_verification": "PASS; 653 entries, zero mismatches",
    "open_timestamps": "Submitted to four remote calendars; blockchain confirmation pending",
    "external_timestamp_confirmed": false
  },
  "blinding_limit": "The solver received no publication measurement values or result plots, but the human/orchestrator had prior abstract-level and Section 4.1-summary exposure; this is not a fully blind benchmark.",
  "measurement_comparison": {
    "status": "UNSCORED",
    "reason": "The frozen 0.246 m/s solver condition (Re approximately 519.105 with the declared solver properties) is not established as an exact experimental point in the accessible article data. The preregistered rule requires a matched frozen condition and prohibits fitting/extrapolation. No Aero-versus-experiment error percentage is calculated from a guessed or mismatched point.",
    "source_reported_context": "The paper reports aggregate Model 6 numerical-to-experimental deviations of 11.6% for Nusselt number and 11.5% for friction factor, with experimental values slightly higher. These are the authors' own comparison, not Aero's score.",
    "comparison_record": "post_reveal_comparison_v1.json",
    "digitized_measurements": false,
    "scoring_rule": "Compare only a matching frozen experimental condition and measurement definition; otherwise mark UNSCORED. No v1 tuning after reveal."
  },
  "overall_disposition": {
    "status": "INCOMPLETE",
    "openfoam_numerical": "FAIL",
    "experimental_comparison": "UNSCORED",
    "calculix_source_validation": "NOT_SUPPORTED_BY_SOURCE",
    "calculix_exploratory_mapping": "FAIL_BLOCKED_AT_100_PERCENT_COVERAGE"
  },
  "reveal_protocol": {
    "prediction_package_remains_unchanged": true,
    "post_reveal_record_is_separate": true,
    "external_timestamp_state": "SUBMITTED_TO_FOUR_CALENDARS; BITCOIN_CONFIRMATION_PENDING_AT_REVEAL",
    "timestamp_confirmed": false,
    "note": "Publication results were reviewed after the frozen inventory was re-hashed but before the external OpenTimestamps proof received Bitcoin confirmation. This procedural limitation is disclosed in the post-reveal record."
  }
}