Mass Transfer between Solid Wall and Fluid Streams. Interferometric Measurements of Concentration Profiles in Turbulent and Streamline Flow.

The concentration field during transient natural convection between vertical electrodes in a small-aspect-ratio cell

“…The early works on two-beam interferometry in electrochemistry were reviewed by Muller [1]. Different interferometers such as Rayleigh [2,3], Jamin [4,5] and Mach-Zehnder [6][7][8] have been used to study the concentration field during electrochemical processes. The ionic mass-transfer rate was first examined by Ibl's group [9] by means of a Jamin interferometer.…”

“…The ionic mass-transfer rate was first examined by Ibl's group [9] by means of a Jamin interferometer. Various kinds of interferometers were used to determine diffusion coefficients [10,11] and to study the mass transport boundary layers in the early time [4][5][6]. Santhanam and O'Brien reviewed the use of laser interferometry to study mass transport in electrodeposition of metals and polymers without [12] and in the presence of magnetic fields [13,14].…”

“…A great deal of work [4][5][6][7][8][9][19][20][21][22][23][24][25][26][27] has been devoted to the interferometric analysis of the concentration profiles developing during the electrolysis of CuSO 4 solution between vertical electrodes. This indeed constitutes a typical problem due to the numerous analytical solutions and scaling predictions available from the analogous problems in heat transfer (two sidewalls (i) either at constant, but different temperatures or (ii) exposed to a constant heat flux).…”

Interferometric Study of Forced Convection Mass Transfer Boundary Layers in Laminar Channel Flow

“…2 and the values 0 = 7.9 x 10-6 cm 2 /s and t+ = .0.40 for 10-2 M Cdso 4 given in the compilation of Chapman and Newman (1968). These values correspond to an effective diffusion coefficient which is 30% higher than that used by Lin et al (1953):…”

“…This study complements the work of Tobias and Hickman (1965), that employed the limiting current technique to study ionic mass transport by combined free and forced convection, and the classical heat transfer study of Norris and Streid (1940). Compared to the previous interferometric study by Lin et al (1953) on turbulent flow, this investigation accounts for optical aberrations (Muller, 1973;Hauf et al, 1970;Howes et al, 1966) associated with interferometry. The most serious optical aberration is caused by light curvature within the refractive index field (boundary layer), which is fully accounted for in the present work.…”