1 2 GfsSimulation GfsBox GfsGEdge {} { GfsTime { end = 50 } GfsRefine 6 GfsInit {} { U = (0.5 - rand()/(double)RAND_MAX) V = (0.5 - rand()/(double)RAND_MAX) } GfsOutputTime { istep = 10 } stdout GfsOutputProjectionStats { istep = 10 } stdout GfsOutputPPM { step = 1 } vorticity-%04.1f.ppm { v = Vorticity } } GfsBox {} 1 1 right 1 1 top