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Parametric Study of Instability in Obstructed Channel Flow
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 Title & Authors
Parametric Study of Instability in Obstructed Channel Flow
Hwang, In-Sang; Yang, Gyeong-Su; Kim, Do-Hyeong;
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A Parametric study is numerically carried out for flow fields in a two-dimensional plane channel with thin obstacles(“baffles and blocks”) mounted symmetrically in the vertical direction and periodically in the streamwise direction. The aim of this investigation is to understand how various geometric conditions influence the critical characteristics and pressure drop. A range of BR(the ratio of baffle interval to channel height) between 1 and 5 is considered. Especially when BR is equal to 3, for which the critical Reynolds number turned out to be minimal, we add blocks in the center region in order to study their destabilizing effects on the flows. It is revealed that the critical Reynolds number is further decreased by the presence of the block.
Instability;Hopf Bifurcation;Reattachment;Baffle;Recirculation;
 Cited by
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