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http://dx.doi.org/10.3795/KSME-B.2012.36.1.061

Effect of Nonequilibrium Condensation on the Oscillation of the Terminating Shock in a Transonic Airfoil Flow  

Kim, Jin-Soo (School of Mechanical Engineering, Kyungpook Nat'l Univ.)
Lee, Sung-Jin (School of Mechanical Engineering, Kyungpook Nat'l Univ.)
Alam, Miah Md. Ashraful (Graduate School of Science & Engineering, Saga Univ.)
Kwon, Soon-Bum (School of Mechanical Engineering, Kyungpook Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.36, no.1, 2012 , pp. 61-66 More about this Journal
Abstract
In this study, to find the effect of nonequilibrium condensation on the oscillation of the terminating shock wave in transonic flows, an NACA0014 airfoil flow with nonequilibrium condensation is analyzed using the total variation diminishing (TVD) numerical scheme. Transonic free stream Mach numbers of 0.81-0.87 are tested with variations in the stagnation relative humidity. For the same free stream Mach number and attack angle of ${\alpha}=0^{\circ}$, an increase in the stagnation relative humidity attenuates the strength of the terminating shock and reduces the oscillation of the terminating shock wave. Furthermore, for the same stagnation relative humidity, the larger the free stream Mach number becomes, the shorter the period of the oscillation shock wave is. The excursion distance of the oscillation shock increases with the free stream Mach numbers for the same stagnation relative humidity. Finally, it is found that for the same shock location, the strength of the oscillating shock facing upstream is stronger than that facing downstream.
Keywords
Non-Equilibrium Condensation; Transonic; Oscillation; Moist Air; Terminating Shock;
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Times Cited By KSCI : 1  (Citation Analysis)
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