This paper presents an experimental study of transport of a solute (fluorescent dye Rhodamine B dissolved in water) in a porous medium in the presence of water oscillations. The porous medium is a rectangular cell containing cylinders whose axis was normal to the plane of the cell. The measurement technique used allowed us to measure the Rhodamine B mass transport rate and obtain an instantaneous and a steady streaming velocity field between the cylinders. The diffusion coefficient related to steady streaming has been shown to be a linear function of the Peclet number, evaluated from the fluid steady streaming velocity. At low dimensionless oscillation frequencies, there is a universal relation between the effective diffusion coefficient and Peclet number. At moderate dimensionless oscillation frequencies, the proportionality factor between these parameters increases with increasing frequency.
Polezhaev et al. (Mon,) studied this question.