Forced convection of two-dimensional supercritical CO2 flow in plane symmetric sudden expansion duct is investigated numerically in this paper. Simulations were conducted under three wall boundary conditions, i.e., heating, cooling and isothermal, at low Reynolds numbers. Critical Reynolds numbers above which flow asymmetric occurs were examined under each condition. Results of the isothermal case agree well with previous numerical results. However, Compared with the isothermal case, smaller critical Reynolds numbers are found under both of heating and cooling conditions. In addition, the critical Reynolds numbers decrease with the increasing of heating/cooling intensity each under these two conditions. Furthermore, a new concept from the viewpoint of field synergy is introduced to illustrate this phenomenon of the reduction of flow stability.
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2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4937-8
PROCEEDINGS PAPER
Flow Stability of Laminar Supercritical CO2 Sudden Expansion Flow With Field Synergy Principle Available to Purchase
Xin-Rong Zhang
Xin-Rong Zhang
Peking University, Beijing, China
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Bi-Li Deng
Peking University, Beijing, China
Xin-Rong Zhang
Peking University, Beijing, China
Paper No:
IHTC14-22464, pp. 533-538; 6 pages
Published Online:
March 1, 2011
Citation
Deng, B, & Zhang, X. "Flow Stability of Laminar Supercritical CO2 Sudden Expansion Flow With Field Synergy Principle." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 2. Washington, DC, USA. August 8–13, 2010. pp. 533-538. ASME. https://doi.org/10.1115/IHTC14-22464
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