Mechanical Engineering Faculty Research
Title
High Schmidt Mass Transfer using Chapman-Khun’s near Wall Coherent Structure Model
Document Type
Article
Publication Date
10-2001
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.
Publication Title
International Journal of Heat and Mass Transfer
Volume
44
Issue
20
First Page
3833
Last Page
3842
Recommended Citation
Chen, Mingyong; Chen, Qian; Zhe, Jiang; and Modi, Vijay, "High Schmidt Mass Transfer using Chapman-Khun’s near Wall Coherent Structure Model" (2001). Mechanical Engineering Faculty Research. 997.
https://ideaexchange.uakron.edu/mechanical_ideas/997