Transient dynamics and stability on spanwise-oscillatory turbulent channel
Abstract eng: We suggested the new prediction parameter for drag reduction effect of the spanwise wall-oscillation control based on both the acceleration and shear rate in the wall-normal direction, which is available for the larger oscillation time-period (T > 150). Additionally, we conducted direct stability analysis on spanwise-oscillatory turbulent-channel. The present results suggest that the wall oscillation affects on the transient growth rate, while it does not quantitatively correlate with the control performance. The drag reduction effect of the spanwise wall-oscillation is not dominated only by the linear transient behavior of the streak.
Publisher:
International Union of Theoretical and Applied Mechanics, 2016
Conference Title:
Conference Title:
24th International Congress of Theoretical and Applied Mechanics
Conference Venue:
Montreal (CA)
Conference Dates:
2016-08-21 / 2016-08-26
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-11-15, last modified 2016-11-15
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