Diffusion coefficient near a wall: At what distances z_(p) are the diffusion coefficients D_(||)(z_(p)) and D⊥(z_p) equal to 1/3 of their values in bulk fluid (i.e., D_(infty))? This is the complete question, no extra information is given.
Added by Jack N.
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Step 1: The diffusion coefficient near a wall can be described by the following equations: D_(||)(z) = D_(\infty) [1 + 2z/h]^-1 D⊥(z) = D_(\infty) [1 + z/h]^-1 where h is the distance from the wall. Show more…
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