{
  "id": "single-software-execution--cli--openfoam--task-19--ubuntu",
  "snapshot": "OpenFOAM11",
  "instruction": "Copy `/home/user/Desktop/porous_base/` to `/home/user/Desktop/porous/` and solve a fixed packed-bed pressure-drop case with OpenFOAM from the command line. Source the installed OpenFOAM environment before running OpenFOAM commands. On this machine, before running the case, load OpenFOAM with `source /opt/openfoam11/etc/bashrc`; the solver binaries are under `/opt/openfoam11/bin` and its platform bin directory.\n\nBuild a `1 x 0.1 x 0.01 m` rectangular domain with exactly `(100 10 1)` cells, symmetry at the y boundaries and empty front/back faces. Use water with reference density `1000 kg/m^3`, kinematic viscosity `1e-6 m^2/s`, a uniform inlet velocity `(0.1 0 0)` m/s, and zero kinematic pressure at the outlet. Select all 1,000 cells into the cell zone `porosity` using `topoSet`. Apply an isotropic Darcy-Forchheimer model to that entire zone with `d=(1e8 1e8 1e8) 1/m^2`, `f=(1000 1000 1000) 1/m`, and coordinate axes aligned with the global axes. Run `blockMesh`, require a successful `checkMesh`, run `topoSet`, and solve laminar flow for exactly 500 SIMPLE iterations using `porousSimpleFoam`, retaining ASCII iteration-500 `U` and `p`. Save outputs as `/home/user/Desktop/porous/log.blockMesh`, `log.checkMesh`, `log.topoSet`, and `log.porousSimpleFoam`; a failed mesh check is not acceptable. Write final cell centres `C` and save that output as `log.writeCellCentres`. At every distinct cell-centre x-coordinate, average kinematic pressure over the 10 cross-sectional cells. Define `delta_p` in Pa as `1000 * (p_mean at the first x station - p_mean at the last x station)`. Create `/home/user/Desktop/postprocess.py` that reads the final `C` and `p`, writes all 100 axial stations to `/home/user/Desktop/axial_pressure.csv` with columns `x_m,p_kinematic_m2ps2,p_pa`, and writes `/home/user/Desktop/summary.txt` as one line containing `delta_p`. Do not hard-code the result and do not use GUI tools.",
  "source": "https://github.com/openfoam/openfoam-dev",
  "config": [
    {
      "type": "upload_file",
      "parameters": {
        "files": [
          {
            "local_path": "task-19/init_file/porous_base.tar",
            "path": "/home/user/Desktop/porous_base.tar"
          }
        ]
      }
    },
    {
      "type": "launch",
      "parameters": {
        "command": "bash -c \"mkdir -p '/home/user/Desktop/' && tar -xf '/home/user/Desktop/porous_base.tar' -C '/home/user/Desktop/' && rm -f '/home/user/Desktop/porous_base.tar'\"",
        "shell": true
      }
    }
  ],
  "trajectory": "trajectories/",
  "related_apps": [
    "openfoam"
  ],
  "artifact_paths": [
    "/home/user/Desktop/axial_pressure.csv",
    "/home/user/Desktop/postprocess.py",
    "/home/user/Desktop/summary.txt"
  ],
  "evaluator": {
    "postconfig": [
      {
        "type": "upload_file",
        "parameters": {
          "files": [
            {
              "local_path": "task-19/eval.py",
              "path": "/home/user/Desktop/eval.py"
            }
          ]
        }
      }
    ],
    "func": "exact_match",
    "result": {
      "type": "vm_command_line",
      "command": "python3 /home/user/Desktop/eval.py",
      "shell": "true"
    },
    "expected": {
      "type": "rule",
      "rules": {
        "expected": "True\n"
      }
    }
  },
  "proxy": false,
  "fixed_ip": false,
  "possibility_of_env_change": "low"
}