Which mechanism causes increased drag coefficient in molecular monolayer coatings under high Reynolds number flow?

💡 Explanation

When high Reynolds number flow interacts with molecular monolayers, induced surface waves increase form drag because of imbalances in pressure distribution normal to the surface. Therefore pressure drag from surface waves results, rather than vortex shedding, viscosity changes, or delamination which involve momentum transfer via eddy formation or weak adhesion.

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