Wetting dynamical profile

J. E Joanny, Dynamics of wetting Interface profile of a spreading liquid. J. Mec. Theor. Appl. Special Issue, 249-71 (1986). 

This treatment does not take the interactions of the fluid with the substrate into account. Wetting considerations lead to an unusual surface profile and to hydrodynamic instabilities as discussed in Chapter 4 in the section on wetting dynamics. ... 

Computational fluid dynamic (CFD) calculations were performed to give the Pd concentration profile in a nanopore of the oxide catalyst carrier layer [283]. For wet chemical deposition most of the catalyst was deposited in the pore mouth, in the first 4 pm of the pore. Thus, most of the hydrogenation reaction is expected to occur in this location. For electrochemical deposition, large fractions of the catalyst are located... 

Fig. 28. Averaged order parameter profiles cf>av(Z,x) plotted vs the scaled distance Z=z/2 b from the left wall at z=0 for four different scaled times T after the quench as indicated, for a scaled distance D =D/2 b=60. Choosing a rescaled distance L /2 b=600, and a discretization AX=1.5, Ax=0.05, the resulting equations are solved by the cell-dynamics method. The results shown are for parameters h1=y=4, g =-4, and averaged over 2000 independent initial conditions, corresponding to random fluctuations in a state with J( )av(Z,0)dZ=0. The parameters Iq and g were chosen such that both walls prefer A but one is still in the non-wet region of the equilibrium surface phase diagram of the corresponding semi-infinite system. From Puri and Binder [145]...

Marangoni interfacial stresses which slow the dynamics of wetting. Additional variables which influence adhesion tension include (1) impurity profile and particle habit/morphology typically controlled in the particle formation stage such as crystallization, (2) temperature of granulation, and (3) technique of grinding, which is an additional source of impurity as well. 

Figure 18(A) illustrates an example of dynamic wetting, where a time series of drop profiles are imaged as a drop wets in to a formulation tablet. Note that the time...

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