Abstract
A time-developing natural convection boundary layer flow on a vertical flat plate from laminar to turbulence has been calculated with a direct numerical simulation. The profiles of mean and fluctuating fluid components obtained in the turbulent region are coincided with the existing measurements, when the comparisons are made for the Grashof number based on the integral thickness of the boundary layer. Consequently, it is expected that the direct numerical simulation of time-developing flows can provide various information with regard to the turbulent natural convection boundary layer.
