The nature of turbulent flows is often described in contrast to that of laminar flows. A laminar flow field may be steady or unsteady, whereas, a turbulent flow field is always unsteady. The velocity field in a laminar flow may be 1C, 2C or 3C, whereas the velocity field in a turbulent flow is always 3C. The velocity and the pressure fields in a laminar flow may be 1D, 2D or 3D, whereas in a turbulent flow field, the velocity as well as the pressure fields are always 3D. The vorticity field in a laminar may be zero or non-zero. A turbulent flow always always has a highly non-uniform and time-varying vorticity field.