dynamics ( 

,

 gravity = 1.0,

 air_density = 0.05,

 Floor = ON,

 floor_offset = 0.0,

 ceiling = OFF,

 ceiling_offset = 20.0,

 left = OFF,

 left_offset = -10.0,

 right = OFF,

 right_offset = 10.0,

 front = OFF,

 front_offset = -10.0,

 back = OFF,

 back_offset = 10.0,

 wall_friction = 0.0,

 wall_elasticity = 0.707,

 turbulence_intensity = 0.0,

 turbulence_spread = 0.5,

 turbulence_persistence = 5.0,

 turbulence_animated = ON,

 turbulence_space_resolution =  16,

 turbulence_time_resolution =  16,

 turbulence_roughness = 0.5,

 turbulence_variability = 0.5,

 turbulence_granularity = 0.0

);