TY - JOUR
T1 - An investigation into inflection-point instability in the entrance region of a pulsating pipe flow
AU - Miau, J. J.
AU - Wang, R.
AU - Jian, T. W.
AU - Hsu, Y. T.
N1 - Funding Information:
This research work is being supported by Ministry of Science and Technology, Taiwan. The authors would like to acknowledge the funding support of the Ministry of Science and Technology, Taiwan, for this research under the conntract numbers 101-2221-E-006-057-MY3 and 105-2221-E-006-092-MY3.
Publisher Copyright:
© 2017 The Author(s) Published by the Royal Society. All rights reserved.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - This paper investigates the inflection-point instability that governs the flow disturbance initiated in the entrance region of a pulsating pipe flow. Under such a flow condition, the flow instability grows within a certain phase region in a pulsating cycle, during which the inflection point in the unsteady mean flow lifts away from the viscous effect-dominated region known as the Stokes layer. The characteristic frequency of the instability is found to be in agreement with that predicted by the mixing-layer model. In comparison with those cases not falling in this category, it is further verified that the flow phenomenon will take place only if the inflection point lifts away sufficiently from the Stokes layer.
AB - This paper investigates the inflection-point instability that governs the flow disturbance initiated in the entrance region of a pulsating pipe flow. Under such a flow condition, the flow instability grows within a certain phase region in a pulsating cycle, during which the inflection point in the unsteady mean flow lifts away from the viscous effect-dominated region known as the Stokes layer. The characteristic frequency of the instability is found to be in agreement with that predicted by the mixing-layer model. In comparison with those cases not falling in this category, it is further verified that the flow phenomenon will take place only if the inflection point lifts away sufficiently from the Stokes layer.
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U2 - 10.1098/rspa.2016.0590
DO - 10.1098/rspa.2016.0590
M3 - Article
AN - SCOPUS:85012267451
SN - 1364-5021
VL - 473
JO - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
JF - Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
IS - 2197
M1 - 20160590
ER -