| Autor: |
Khoshlessan, M., Karimian, S. M. H., Daemi, N. |
| Zdroj: |
AIP Conference Proceedings; Oct2013, Vol. 1558 Issue 1, p1421-1424, 4p, 2 Charts, 1 Graph |
| Abstrakt: |
The object of this paper is to employ and evaluate the MCIM (Mass Corrected Interpolation Method) algorithm of Alisadeghi and Karimian for the solution of steady and unsteady two dimensional external flows at very low Reynolds numbers. Algorithm of Alisadeghi and Karimian has been previously verified for the solution of unsteady internal flows, including Taylor problem, inviscid converging-diverging nozzle and the lid-driven cavity. To this end, MCIM algorithm of Alisadeghi and Karimian is applied to study the steady and unsteady flows over a circular cylinder section and unsteady flow over a NACA 0012 airfoil. Since a fully implicit procedure is used here, the following measures are taken into account to reduce the CPU time and the required memory; 1) employment of a band solver with node renumbering, and 2) employment of a direct sparse solver. Results obtained from the present algorithm are examined carefully and validated against other computational studies available in the literature. Overall, all the validations show that the present algorithm performs very well for the transient external flows, and its results are in very good agreement with the results reported in the literature including flow structures and the vortices. As a result of this study we have gained great confidence to employ MCIM algorithm of Alisadeghi and Karimian for the study of laminar flow over a gurney flapped airfoil, which contains unsteady flow due to its periodic vortex shedding behavior at low Reynolds numbers, in our future research. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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