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Article
A quasi one-dimensional method and results for steady annular/stratified shear and gravity driven condensing flows
International Journal of Heat and Mass Transfer
  • Soumya Asimkumar Mitra, Michigan Technological University
  • Amitabh Narain, Michigan Technological University
  • Ranjeeth R. Naik, Michigan Technological University
  • Shantanu D. Kulkarni, Michigan Technological University
Document Type
Article
Publication Date
4-8-2011
Abstract
This paper presents an effective quasi one-dimensional (1-D) computational simulation methodology for steady annular/stratified internal condensing flows of pure vapor. In-channel and in-tube flows are considered for a range of gravity component values in the direction of the flow. For these flows, three sets of results are presented and they are obtained from: (i) a full 2-D CFD based approach, (ii) the quasi-1D approach introduced here, and (iii) relevant experimental results for gravity driven condensing flows of FC-72. Besides demonstrating differences between shear and gravity driven annular flows, the paper also presents a map that distinguishes shear driven, gravity driven, and “mixed” driven flows within the non-dimensional parameter space that govern these duct flows. The paper also demonstrates that μm-scale hydraulic diameter ducts typically experience shear/pressure driven flows.
Publisher's Statement

© 2011 Elsevier Ltd. Publisher’s version of record: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2011.03.008

Citation Information
Soumya Asimkumar Mitra, Amitabh Narain, Ranjeeth R. Naik and Shantanu D. Kulkarni. "A quasi one-dimensional method and results for steady annular/stratified shear and gravity driven condensing flows" International Journal of Heat and Mass Transfer Vol. 54 Iss. 15-16 (2011) p. 3761 - 3776
Available at: http://works.bepress.com/a-narain/12/