The study shows that increasing the viscosity variation leads to increases in both the skin friction
and the heat transfer coefficient.
Fig 4, It is seen that amplitude INI of the skin friction
at the plate decreases with increases in [K.sub.0], Gr, [omega], M & Pr.
The major change in the skin friction
at the wall is due to the variation of the permeability parameter [K.sub.p] and Schmidt number [S.sub.c].
The hydrodynamically smooth regime is determined by the skin friction
coefficient depending on the Reynolds number, being independent of roughness geometry.
The skin friction
coefficient and couple stress coefficient are given as
The effect of the nanoparticle volume fraction on the flow characteristics, and mainly on the local skin friction
coefficient, is investigated.
The physical quantities of interest are the skin friction
coefficient Cy, the local Nusselt number [Nu.sub.x], and the local Sherwood number [Sh.sub.x] which are defined as 
The physical quantities of interest such as skin friction
[C.sub.f] and Nusselt number Nu are calculated.
SHAYO, The Skin friction
in the unsteady free convection flow past an accelerated plate, Astrophysics and Space science, 125 (1986), 315-324.
But Lockerby's team thinks the micro-jet system could end up reducing skin friction
drag by as much as 40 percent.
The quantities of physical interest in this problem are the local skin friction
coefficient, [C.sub.fx], the local Nusselt number, [Nu.sub.x], and local Sherwood number, [Sh.sub.x], which are defined as