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Investigation Of Wetting Hydrodynamics Using Numerical Simulations, David E. Finlow, Prakash R. Kota, Arijit Bose

Chemical Engineering Faculty Publications

Meniscus shapes from a simulation of a plate immersing into an infinitely deep liquid bath, for a range of outer length scales, have been obtained numerically. These have been compared with the leading‐order prediction from a three‐region asymptotic analysis done in the double limit, Capillary number, Ca→0, L_S/L_C→0, with Ca ln(L_C/L_S) of O(1), where L_S and L_C represent the slip length and an outer macroscopic length, respectively. For Ca<0.01, the numerically computed and the perturbation solutions show excellent agreement. Within this range of Ca, the meniscus slope at a distance 10L_S from the dynamic contact line is geometry independent, that is, does not vary with changes …