Viscous flow region

A mathematical expression for the friction factor can be obtained from the equation for the straight line in the viscous-flow region of Fig. 14-1. Thus, at... 

The development of viscous and inviscid regious of flow as a result of iu-serting h flat plate parallel into a fluid stream of uniform velocity is shown in Fig. 6 7. The fluid slicks to the plate on both sides because of the no slip con dition, and the thin boundary layer in which the viscous effects are significant near the plate surface is the viscous flow region. The regiou of flow on both sides away from the plate and unaffected by the presence of the plate is the inviscid flow region. 

Model studies on mixers in the viscous flow region, Dutch in De Ingenieur... 

The different slopes on the curves for nitrogen and hydrogen are due to the difference in velocities. When discharge coefficients are plotted against Reynolds number it is found that the coefficient rises to a maximum in the viscous flow region and then decreases to a rather constant value as the Reynolds number increases. Figure 4, from Tuve and Sprenkle [ 1] shows this effect for two different diameter ratios. 

Question by N. G. Wilson, University of Colorado I would like an explanation of how your pumping speed in the viscous flow region is compared to molecular-flow pumping speeds ... 

The magnitude of the relaxation modulus is very sensitive to temperature. Glassy, leathery, rubbery, and viscous flow regions may be identified on a plot of logarithm of relaxation modulus versus temperature (Figure 15.7). 

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