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Article
High Schmidt Mass Transfer using Chapman-Khun’s near Wall Coherent Structure Model
International Journal of Heat and Mass Transfer
  • Mingyong Chen
  • Qian Chen
  • Jiang Zhe, University of Akron Main Campus
  • Vijay Modi
Document Type
Article
Publication Date
10-1-2001
Abstract

High Schmidt number mass transfer in a fully developed turbulent flow is examined using a near wall coherent structure model. The computational approach relies on specification of idealized boundary conditions in the form of a two eddy structure imposed at a distance of y+=40 away from the wall. The parameters describing the spatial and temporal eddy behavior are obtained from a combination of experimental observation, analysis and computer trials as described by D.R. Chapman, G.D. Kuhn (AIAA Paper 81-1024 (1981) 306–316). Among these parameters, those describing the root mean square (rms) velocities in normal and spanwise directions are found to have significant influence on mass transfer at the wall. A correlation relating the mass transfer rate and the rms velocities is obtained. The effects of turbulence intensity on eddy viscosity and eddy diffusivity are also determined.

Citation Information
Mingyong Chen, Qian Chen, Jiang Zhe and Vijay Modi. "High Schmidt Mass Transfer using Chapman-Khun’s near Wall Coherent Structure Model" International Journal of Heat and Mass Transfer Vol. 44 Iss. 20 (2001) p. 3833 - 3842
Available at: http://works.bepress.com/jaing_zhe/66/