{
  "case": "cfd/laminar_flow / lid-driven cavity, Ghia, Ghia & Shin (1982)",
  "citation": "Ghia, U., Ghia, K.N., Shin, C.T. (1982), J. Comput. Phys. 48(3), 387-411",
  "geometry": {
    "L_m": 1.0,
    "DZ_m": 0.1
  },
  "U_lid_m_s": 1.0,
  "value_tolerance_pct": 20.0,
  "location_tolerance_pct": 25.0,
  "note": "v_max_x/v_min_x are reported but not gated on tight numeric agreement -- near-wall peak location is far more resolution-sensitive than bulk magnitude on this single, non-wall-refined mesh (~30 elements/side vs. Ghia's 129x129 grid); gated instead on qualitative circulation direction (v_max on the side nearer x=0, v_min nearer x=L), independently re-derived from first principles (lid drags +x at top -> turns down at right wall -> left along bottom -> up at left wall -> clockwise circulation).",
  "runs": [
    {
      "Re": 100.0,
      "n_nodes": 25529,
      "n_vcenter_samples": 202,
      "n_hcenter_samples": 207,
      "simulated": {
        "u_min": -0.21746787466996925,
        "u_min_y": 0.4476681326620692,
        "v_max": 0.18507942585734813,
        "v_max_x": 0.25843593216944477,
        "v_min": -0.2684395823587792,
        "v_min_x": 0.812452243651406
      },
      "reference_ghia1982": {
        "u_min": -0.2109,
        "u_min_y": 0.4531,
        "v_max": 0.1753,
        "v_max_x": 0.0625,
        "v_min": -0.2453,
        "v_min_x": 0.9531
      },
      "error_pct": {
        "u_min_pct": 3.114212740620791,
        "v_max_pct": 5.578679895806114,
        "v_min_pct": 9.433176664810107,
        "u_min_y_pct": 1.1988230717128292,
        "v_max_x_pct": 313.49749147111163,
        "v_min_x_pct": 14.756872977504349
      },
      "elapsed_s": 502.3010413646698
    },
    {
      "Re": 400.0,
      "n_nodes": 25529,
      "n_vcenter_samples": 202,
      "n_hcenter_samples": 207,
      "simulated": {
        "u_min": -0.3199485910677358,
        "u_min_y": 0.2989449267906352,
        "v_max": 0.28682117958733344,
        "v_max_x": 0.25843593216944477,
        "v_min": -0.4462772627814436,
        "v_min_x": 0.8671076976144326
      },
      "reference_ghia1982": {
        "u_min": -0.3273,
        "u_min_y": 0.2813,
        "v_max": 0.302,
        "v_max_x": 0.0547,
        "v_min": -0.4499,
        "v_min_x": 0.8906
      },
      "error_pct": {
        "u_min_pct": 2.2460766673584356,
        "v_max_pct": 5.026099474392897,
        "v_min_pct": 0.8052316556026756,
        "u_min_y_pct": 6.272636612383657,
        "v_max_x_pct": 372.4605706936833,
        "v_min_x_pct": 2.6378062413617025
      },
      "elapsed_s": 607.4950342178345
    }
  ],
  "per_run_pass": [
    true,
    true
  ],
  "pass": true
}