The more efficient mixing which occurs in a turbulent boundary layer transports kinetic energy from the edge of the boundary layer to the low momentum flow at the solid surface, often preventing the separation which would occur for a laminar boundary layer under the same conditions.
32.
Hence the moment method makes it possible to track and quantify the inner viscous region using { \ lambda _ n } moments whereas the outer region of the turbulent boundary layer is tracked using { \ zeta _ n } and { \ kappa _ n } moments.
33.
In this period, he oversaw development of practical methods of analyzing laminar and turbulent boundary layer flow, new and improved static pressure probes, the hydrogen bubble technique of flow visualization, potential flow analysis, analysis of stability and transition of boundary layers and the e n method of predicting boundary layer transition.
34.
The turbulent boundary layer thickness formula assumes 1 ) the flow is turbulent right from the start of the boundary layer and 2 ) the turbulent boundary layer behaves in a geometrically similar manner ( i . e . the velocity profiles are geometrically similar along the flow in the x-direction, differing only by stretching factors in y and u ( y ) ).
35.
The turbulent boundary layer thickness formula assumes 1 ) the flow is turbulent right from the start of the boundary layer and 2 ) the turbulent boundary layer behaves in a geometrically similar manner ( i . e . the velocity profiles are geometrically similar along the flow in the x-direction, differing only by stretching factors in y and u ( y ) ).
