A non-planar mixing layer observed between parallel Couette flows by Narasimhamurthy et al. (Phys Rev E 85:036,302, 2012) is considered. Direct numerical simulation is chosen, and simulations are run in order to determine the critical Reynolds number at which the interface between the co-flowing laminar and non-laminar flow becomes unstable exhibiting a meandering motion. The necessary conditions required to trigger the shear-layer instability were also discussed. Different combinations of Reynolds numbers are chosen keeping the Reynolds number ratio between the laminar and non-laminar flows as constant. Preliminary results indicate that the onset of instability occurs, and a meandering motion is observed at the interface when Reynolds number for the non-laminar flow corresponds to 650.
- Direct numerical simulation
- Turbulent non-turbulent interface
- Meandering motion
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Narasimhamurthy VD, Ellingsen SÅ, Andersson HI (2012) Bilateral shear layer between two parallel Couette flows. Phys Rev E 85:036302
Narasimhamurthy VD, Andersson HI, Pettersen B (2014) Novel features of a fully developed mixing-layer between co-flowing laminar and turbulent Couette flows. Phys Fluids 26:031703
da Silva CB, Hunt JCR, Eames I, Westerweel J (2014) Interfacial layers between regions of different turbulence intensity. Annu Rev Fluid Mech 46:567–590
Manhart M (2004) A zonal grid algorithm for DNS of turbulent boundary layers. Comput Fluids 33:435–461
Tuckerman LS, Barkley D (2011) Patterns and dynamics in transitional plane Couette flow. Phys Fluids 23:041301
Schneider TM, Lillo FD, Buehrle J, Eckhardt B, Dörnemann T, Dörnemann K, Freisleben B (2010) Transient turbulence in plane Couette flow. Phys Rev E 81:015301
The first author would like to thank Shashi Kumar J and Karthikeyan J (CFTC lab, IIT Madras) for taking their valuable time in helping and teaching necessary concepts and techniques during all stages of learning process for the work. We thank P.G. Senapathy Center for Computing Resource, IIT Madras, for the grant of computing time.
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Manohar Teja, K., Narasimhamurthy, V.D. (2021). DNS of an Oscillating Shear Layer Between Two Parallel Couette Flows. In: Venkatakrishnan, L., Majumdar, S., Subramanian, G., Bhat, G.S., Dasgupta, R., Arakeri, J. (eds) Proceedings of 16th Asian Congress of Fluid Mechanics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-5183-3_26
Publisher Name: Springer, Singapore
Print ISBN: 978-981-15-5182-6
Online ISBN: 978-981-15-5183-3