Boundary layer flows continuous flat surface

Continuous Flat Surface Boundaiy layers on continuous surfaces drawn through a stagnant fluid are shown in Fig. 6-48. Figure 6-48 7 shows the continuous flat surface (Saldadis, AIChE J., 7, 26—28, 221-225, 467-472 [1961]). The critical Reynolds number for transition to turbulent flow may be greater than the 500,000 value for the finite flat-plate case discussed previously (Tsou, Sparrow, and Kurtz, J. FluidMech., 26,145—161 [1966]). For a laminar boundary layer, the thickness is given by... 

In many electrolysis cells it is the solution rather than the electrode which moves, and as an example of such systems, we shall consider briefly the flow of solution over a flat plate. As the solution flows across the plate, two forces act upon it the first is the cause of the flow and is known as the inertial force (i.e. that generated by the pump or solution head), while the second opposes flow and results from viscous forces between the plate and the solution. Hence as the solution flows over the plate, the layer adjacent to the surface will continuously be slowed down, and the boundary layer, where the rate of flow is less than that in the bulk, will expand into the solution. This is illustrated in Fig. 4.6. The shape of the flow contours and the thickness of the boundary layer will depend on the relative importance of the forces leading to solution flow and those leading to the retardation of flow at the plate/solution interface. Because of the importance of this ratio of inertial/viscous forces, it is given a name, the Reynolds number. Re, This is a dimensionless parameter defined by... 

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