{
  "problem": "Steady subcritical flow in a wide rectangular channel over a manufactured bed (MacDonald et al. 1997), chosen so the depth profile in references/macdonald.py is exact.",
  "domain": {
    "xmin": 0.0,
    "xmax": 1000.0
  },
  "channel": {
    "width_m": 10.0,
    "shape": "rectangular",
    "hydraulic_radius": "equal to depth (wide-channel assumption: side walls carry no friction)"
  },
  "flow": {
    "discharge_m3s": 2.0,
    "unit_discharge_m2s": 0.2
  },
  "friction": {
    "law": "manning",
    "n": 0.03
  },
  "boundaries": {
    "upstream": {
      "type": "discharge",
      "value_m3s": 2.0
    },
    "downstream": {
      "type": "depth",
      "value_m": 0.748324
    }
  },
  "bed": "references.macdonald.bed_elevation(x), with z_b(0) = 0 m",
  "initial_condition": "any; run to steady state",
  "losses": "no expansion or contraction losses; friction only"
}