Abstract:
In this paper the response of the laminar boundary layer on a
flat plate to arbitrary translation were investigated numerically. It
was found that accelerating velocity profiles have steeper gradients
in the near wall region and a lightly thicker boundary layer
when compared to steady state results ([3],[15]). The gradient
were proportional to the acceleration parameter. Decelerating velocity
profiles indicated that flow reversal took place. This reversal
was proportional to the deceleration. The boundary layer was
thinner than calculated in the steady state case. Three types of responses
of the boundary layer to changing conditions in the relative
frame velocity have been identified; Response Type I which
is viscous dominant, Response Type II where certain regions in
the boundary layer are dominated by viscosity and other regions
by momentum and Response Type III which is dominated by
momentum.
Description:
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.
