caa a22 4500 477051219 CHVBK 20180405111340.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF01021969 doi (NATIONALLICENCE)springer-10.1007/BF01021969 Modelling mass transfer entrance lengths in turbulent pipe-flow with applications to small cathodes for measuring local mass transfer rates [Elektronische Daten] [Y. Wang, J. Postlethwaite, D. Bergstrom] Pipe-wall mass transfer, in the developing concentration boundary layer region, under fully developed hydrodynamic conditions is simulated with a low-Reynolds number,k−ε, eddy viscosity turbulence model. The predictions are in good agreement with the electrochemical measurements of Berger and Hau, in the rangeRe=104 to 105, forSc=2244, and of Son and Hanratty, in the rangeRe=1×104-5×104, forSc=2400, in both the developing boundary layer region and the fully developed region. The application of small cathodes embedded in a larger active cathode to measure local mass transfer rates is also simulated. The size of the electrode and the thickness of the electrical insulation around the small electrode give rise to errors that increase as the insulation thickness increases and the electrode size decreases. Chapman & Hall, 1996 Wang Y. Department of Chemical Engineering, University of Saskatchewan, S7N 5C9, Saskatoon, Saskatchewan, Canada aut Postlethwaite J. Department of Chemical Engineering, University of Saskatchewan, S7N 5C9, Saskatoon, Saskatchewan, Canada aut Bergstrom D. Department of Mechanical Engineering, University of Saskatchewan, S7N 5C9, Saskatoon, Saskatchewan, Canada aut Journal of Applied Electrochemistry Kluwer Academic Publishers 26/5(1996-05-01), 471-479 0021-891X 26:5<471 1996 26 10800 https://doi.org/10.1007/BF01021969 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01021969 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Y. Department of Chemical Engineering, University of Saskatchewan, S7N 5C9, Saskatoon, Saskatchewan, Canada aut NATIONALLICENCE 700 1- Postlethwaite J. Department of Chemical Engineering, University of Saskatchewan, S7N 5C9, Saskatoon, Saskatchewan, Canada aut NATIONALLICENCE 700 1- Bergstrom D. Department of Mechanical Engineering, University of Saskatchewan, S7N 5C9, Saskatoon, Saskatchewan, Canada aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 26/5(1996-05-01), 471-479 0021-891X 26:5<471 1996 26 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer