{
    "grids": [
        {
            "name": "grid0",
            "x": "linspace:-5:0:50",
            "y": "linspace:0:5:50",
            "dirS": "grid1",
            "dirN": "grid1",
            "dirE": "grid3",
            "dirW": "grid3"
        },
        {
            "name": "grid1",
            "x": "linspace:-5:0:50",
            "y": "linspace:-5:0:50",
            "dirS": "grid0",
            "dirN": "grid0",
            "dirE": "grid2",
            "dirW": "grid2"
        },
        {
            "name": "grid2",
            "x": "linspace:0:5:50",
            "y": "linspace:-5:0:50",
            "dirS": "grid3",
            "dirN": "grid3",
            "dirE": "grid1",
            "dirW": "grid1"
        },
        {
            "name": "grid3",
            "x": "linspace:0:5:50",
            "y": "linspace:0:5:50",
            "dirS": "grid2",
            "dirN": "grid2",
            "dirE": "grid0",
            "dirW": "grid0"
        }
    ],
    "integration_time": 2.0,
    "vortex": {
        "x0": -1.0,
        "y0": 0.0,
        "mach": 0.5,
        "rstar": 0.5,
        "eps": 1.0
    }
}