{
  "source": "Ishikawa, Gotoh, Takahashi & Fujino (2008), Three-dimensional analysis of electric current distribution in a small-scale scramjet driven DCW MHD generator, Journal of Optoelectronics and Advanced Materials 10(6), 1442–1447.",
  "source_url": "https://joam.inoe.ro/articles/three-dimensional-analysis-of-electric-current-distribution-in-a-small-scale-scramjet-driven-dcw-mhd-generator/fulltext",
  "figure_locator": "Figure 6, printed p.1445 / PDF p.4",
  "local_source": "sources/documents-externes/Ishikawa-et-al-2008-3D-HVEPS-Run3-MHD.pdf",
  "local_source_sha256": "e903dfb069b9a8c600646a1dd45da59d911327bb8f863a88deb01c0cbda4e7b7",
  "reading_method": "Approximate manually recorded visual readings from the reproduced graph; experimental reference is visually read as approximately 58 A. No underlying numerical samples are claimed.",
  "model_series_A": [
    [
      3,
      42
    ],
    [
      5,
      60
    ],
    [
      7,
      73
    ],
    [
      8,
      76
    ],
    [
      9,
      77
    ],
    [
      10,
      72
    ],
    [
      12,
      65
    ],
    [
      14,
      61
    ],
    [
      16,
      59
    ],
    [
      18,
      58
    ],
    [
      20,
      59
    ],
    [
      22,
      58
    ],
    [
      24,
      59
    ],
    [
      26,
      61
    ],
    [
      28,
      66
    ],
    [
      30,
      72
    ],
    [
      31,
      71
    ],
    [
      32,
      68
    ],
    [
      34,
      61
    ]
  ],
  "experimental_reference_A": 58,
  "interpretation": "Authors report model agreement in the active channel after setting sigma/sigma_ideal = 0.813 (an 18.7% reduction from ideal), but computed current remains about 30% high at inlet PTO and 20% high at outlet PTO. This is model-to-measurement comparison, not independent validation or vehicle net-power evidence.",
  "limits": [
    "source plot has no pointwise CSV",
    "visual readings are approximate and no uncertainty bars are inferred",
    "arcing model and imposed 1000 K wall temperature influence near-electrode voltage drops",
    "authors state more detailed end-region electrodynamics is required to define PTO power loss"
  ],
  "generator": "Measured experimental HVEPS Run 3 inputs stated by the paper: inlet 0.284 atm, 2480 K, Mach 2.02; imposed wall 1000 K; maximum field 1.48 T.",
  "grid": "128 x 41 x 21 grid; paper says about 0.2 mm resolution would be required to resolve the ~1 mm near-wall arc scale, so the reported grid is coarse for that phenomenon."
}