Electrochemical Engineering and Energy pp 81-90 | Cite as
Energy Correlation of Mass Transfer in Decaying Annular Swirl Flow
Abstract
Mass transfer measurements at both the inner and outer walls in decaying swirl flow in an annular duct have been carried out using the electrochemical limiting diffusion current technique. Swirl was generated using axial guide-vanes with vane angles between 15–67° to the duct axis. Pressure measurements at the outer wall were also made to enable estimation of the energy cost of mass transfer enhancement. Overall correlation of mass transfer at the outer wall for a representative length of test section in terms of the energy required to impart swirl to the flow can be expressed as Sh Sc -1/3 = 0.0251 (1 + tan θ w )-0.18 X 0.316 for the Reynolds number range 3000– 50000, where θ w is the vane angle at the wall and X is an energy dissipation parameter.
Keywords
Friction Factor Outer Wall Enhancement Ratio Swirl Flow Annular FlowPreview
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References
- 1.R.F. Lopina and A.E. Bergles, J. Heat Transfer 91:434 (1969).CrossRefGoogle Scholar
- 2.F.C. Walsh and G. Wilson, Trans. IMF 64:55 (1986).Google Scholar
- 3.N.Ibl, Convective mass transport., in: “Comprehensive Treatise of Electrochemistry, Vol.6,” Plenum Press, New-York (1983).Google Scholar
- 4.N. Midoux and A. Storck, Electrochemical reactors, in: “Fluid Transport in Electrochemical Reactor Systems,” M.I. Ismail ed., Elsevier, Amsterdam (1989).Google Scholar
- 5.S. Yapici, “Electrochemical Mass Transfer in Annular Swirl Flow,” PhD Thesis, University of Exeter, Exeter, U.K. (1992).Google Scholar
- 6.S. Yapici, M.A. Patrick and A.A. Wragg, Int. Comm. Heat Mass Transfer 21:41 (1994).CrossRefGoogle Scholar
- 7.S. Yapici, M.A. Patrick and A.A. Wragg, Proc. 3rd Int. Workshop on Electrodiffusion Diagnostics of Flows, Dourdan, France, 275 (1993).Google Scholar
- 8.A.J. Ward-Smith, Internal fluid flow, in: “The Fluid Dynamics of Flow in Pipes and Ducts,” Clarendon Press, Oxford (1980).Google Scholar
- 9.K. Rehme, J. Fluid Mech. 64:263 (1974).CrossRefGoogle Scholar
- 10.J.A. Brighton and J.B. Jones, J. Basic Engng. 86:835 (1964).CrossRefGoogle Scholar
- 11.J.M. Beer and N.A. Chigier, “Combustion Aerodynamics,” Applied Science Publishers Ltd., London (1972).Google Scholar
- 12.A. Ivanova, Procs. Second All-Soviet Union Conf. on Heat and Mass Transfer, Minsk, Vol.1, 243–250 (1964).Google Scholar
- 13.A.F. Koval’nogov and K. Shchukin, J. Engineering Physics 14:239 (1968).CrossRefGoogle Scholar
- 14.C.S. Lin, R.W. Moulton and G.L. Putnam, Ind. Eng. Chem. 45:636 (1933).CrossRefGoogle Scholar
- 15.D.A. Dawson and O. Trass, Int. J. Heat Mass Transfer 15:1317 (1983).CrossRefGoogle Scholar
- 16.K.F. Loughlin, A.A. Hayamel and L.C. Thomas, AIChE J. 31:1614 (1985).CrossRefGoogle Scholar