TY - JOUR
T1 - Traveling wave instability in a diverging-converging channel
AU - Floryan, J. M.
AU - Floryan, C.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.
PY - 2010
Y1 - 2010
N2 - The temporal linear stability of a pressure-driven flow in a diverging-converging channel with respect to the traveling wave disturbances is considered. The flow may develop under either the fixed mass flowrate constraint or the fixed pressure gradient constraint. It is shown that the variations in the channel geometry lead to the flow destabilization, as compared with the straight channel case. It is demonstrated that the critical disturbances have the form of two-dimensional waves. The global critical conditions describing the minimum critical Reynolds number required to create the instability for the specified geometry of the channel are given. It is shown that the flow developed under the fixed mass flowrate constraint is slightly more unstable than the flow developed under the fixed pressure gradient constraint. This difference increases with an increase of the amplitude of the channel divergence- convergence. © 2010 The Japan Society of Fluid Mechanics and IOP Publishing Ltd.
AB - The temporal linear stability of a pressure-driven flow in a diverging-converging channel with respect to the traveling wave disturbances is considered. The flow may develop under either the fixed mass flowrate constraint or the fixed pressure gradient constraint. It is shown that the variations in the channel geometry lead to the flow destabilization, as compared with the straight channel case. It is demonstrated that the critical disturbances have the form of two-dimensional waves. The global critical conditions describing the minimum critical Reynolds number required to create the instability for the specified geometry of the channel are given. It is shown that the flow developed under the fixed mass flowrate constraint is slightly more unstable than the flow developed under the fixed pressure gradient constraint. This difference increases with an increase of the amplitude of the channel divergence- convergence. © 2010 The Japan Society of Fluid Mechanics and IOP Publishing Ltd.
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U2 - 10.1088/0169-5983/42/2/025509
DO - 10.1088/0169-5983/42/2/025509
M3 - 21_Publication in refereed journal
VL - 42
JO - Fluid Dynamics Research
JF - Fluid Dynamics Research
SN - 0169-5983
IS - 2
M1 - 025509
ER -