Study of compressible turbulent plane Couette flows via direct numerical simulation
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DOI: 10.1017/jfm.2023.359
Abstract: Abstract Compressible turbulent plane Couette flows are studied via direct numerical simulation for wall Reynolds numbers up to $Re_w=10\ 000$ and wall Mach numbers up to $M_w=5$. Various turbulence statistics are compared with their incompressible… read more here.
Keywords: couette flows; wall; plane couette; turbulent plane ... See more keywords
Coherent structures of elastoinertial instabilities in Taylor–Couette flows
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DOI: 10.1017/jfm.2024.163
Abstract: Abstract We combine flow visualisation techniques and particle image velocimetry to experimentally investigate the higher-order transition to elastoinertial turbulence of Boger fluids ($El = 0.11\unicode{x2013}0.34$) in Taylor–Couette flows. The observed route to turbulence is associated… read more here.
Keywords: elastoinertial instabilities; turbulence; taylor couette; coherent structures ... See more keywords
Destabilization of super-rotating Taylor–Couette flows by current-free helical magnetic fields
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DOI: 10.1017/s0022377821000295
Abstract: In an earlier paper we showed that the combination of azimuthal magnetic fields and super-rotation in Taylor–Couette flows of conducting fluids can be unstable against non-axisymmetric perturbations if the magnetic Prandtl number of the fluid… read more here.
Keywords: magnetic fields; couette flows; rotation; taylor couette ... See more keywords
Influence of Magnetic Field and Porous Medium on Taylor–Couette Flows of Second Grade Fluids Due to Time-Dependent Couples on a Circular Cylinder
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DOI: 10.3390/math13132211
Abstract: Axially symmetric Taylor–Couette flows of incompressible second grade fluids induced by time-dependent couples inside an infinite circular cylinder are studied under the action of an external magnetic field. The influence of the medium porosity is… read more here.
Keywords: field; taylor couette; second grade; magnetic field ... See more keywords