Input Files

Top-level input

{
  "name": "TestSim",
  "mode": "Mode.json",
  "material": "Material.json",
  "beam": "Beam.json",
  "path": "Path.txt",
  "domain": "Domain.json",
  "settings": "Settings.json"
}

mode, material, beam, path, and domain are required. name defaults to TestSim; settings is optional. Mode, material, beam, domain, and settings may be inline JSON objects instead of filenames. Relative filenames are opened relative to the process working directory.

beam and path also accept arrays. A filename with one * expands to a numbered sequence beginning at 1 and ending at the first missing file, such as Beam*.json -> Beam1.json, Beam2.json, …. Beam and path counts must match.

Material

{
  "constants": {
    "T_init": 300.0,
    "T_liq": 1610.0,
    "k": 30.6,
    "c": 600.0,
    "p": 8000.0
  }
}

Key	Meaning	Units	Required/default
k	thermal conductivity	W m⁻¹ K⁻¹	required
c	specific heat	J kg⁻¹ K⁻¹	required
p	density	kg m⁻³	required
T_init	initial temperature	K	1273
T_liq	liquidus temperature	K	1610

Beam

{
  "shape": {
    "width_x": 80e-6,
    "width_y": 80e-6,
    "width_z": 10e-6
  },
  "intensity": { "power": 370.0, "efficiency": 0.40 }
}

The parser requires width_x, width_y, power, and efficiency. width_z defaults to zero if omitted, but a positive value must be supplied for a valid, nonsingular 3-D kernel. Widths are the $\sigma_i$ parameters in the documented Gaussian kernel [m], not diameters. power is nominal $Q$ [W], and efficiency is the absorbed fraction $\eta$. Runtime power becomes $2\eta Q$ for the half-space image convention.

Path

Each whitespace-separated data row is

Mode  X(mm)  Y(mm)  Z(mm)  Pmod  tParam

A nonnumeric header is ignored. Coordinates are converted from mm to m.

Field	Line (Mode=0)	Spot (Mode=1)
position	segment endpoint	fixed spot location
Pmod	power multiplier	power multiplier
tParam	speed [m/s]	dwell [s]

Condor inserts an initial point at (0,0,0,t=0). A zero or negative line speed gives that segment zero duration and should be avoided.

Domain and image boundaries

{
  "domain": {
    "resolution": 25e-6,
    "x": [-0.001, 0.006],
    "y": [-0.001, 0.002],
    "z": [-0.001, 0.0]
  },
  "boundary_conditions": {
    "x": [-0.001, 0.006],
    "y": [-0.001, 0.002],
    "z_min": -0.001,
    "reflections": 1
  }
}

domain.resolution is required and used on all axes. Bounds are metres. If $x/y$ bounds are omitted, Condor uses the active path extrema plus a fixed 500 µm margin on each side. Set z explicitly: the current unset-z code depends on the x/y bound state and does not provide one dependable default. Grid counts are rounded to the nearest interval and bounds are then made grid-consistent. Boundary-condition keys are optional adiabatic image planes; reflections defaults to 1.

Global settings

{
  "output": { "dim": "3D", "format": ".csv", "noOutput": false },
  "meltpool": { "radius_check": 250e-6, "trace_radius": 100e-6 },
  "quadrature": { "cutoff_peak": 1e-9, "cutoff_t0tl": 1e-2 },
  "compute": { "prefetch_threads": 4 },
  "mpi": { "print": 1 }
}

Key	Accepted/default	Purpose
output.dim	2D, 2.5D, 3D, 3D-Full; 3D	spatial region written
output.format	.csv, none; .csv	CSV output or no writer output
output.noOutput	boolean; false	disable file output
meltpool.radius_check	metres; 0	lateral perimeter/scan reach. If a scan is outside domain + meltpool.radius_check buffer, the timestep is skipped.
meltpool.trace_radius	metres; -1	override automatic beam trace radius for seeding new points for meltpool tracking
quadrature.cutoff_peak	fraction; 1e-9	spatial history-radius estimate
quadrature.cutoff_t0tl	fraction; 1e-2	spatial history-radius estimate
compute.prefetch_threads	integer; 2	host node-preparation workers
mpi.print	0, 1, or 2; 0	mute, rank-zero stdout, or rank logs

Configuration keys and string values are case-sensitive. Only the values shown above are accepted.