نتایج جستجو برای: taylor couette
تعداد نتایج: 21289 فیلتر نتایج به سال:
The present work aims to achieve optimal control of instabilities in a standard Taylor–Couette flow. motivation the study is reduce disturbance growth and delay transition process turbulence. We numerically employ using stability modifier, namely, wall transpiration. In non-modal framework, we form state-space model employing actuation by means periodic suction/blowing fluid from walls. conduct...
in this research, the effect of surface roughness and bubble injection on skin friction and hydrodynamic drag force has been numerically considered. this research is based on taylor-couette flow. considered flow includes two concentric cylinders which internal cylinder is movable and external is immovable. the effective equations on the flow includes: equations of momentum, continuous, turbulen...
The first observation of fast and slow magnetocoriolis (MC) waves in a laboratory experiment is reported. Rotating nonaxisymmetric modes arising from a magnetized turbulent Taylor-Couette flow of liquid metal are identified as the fast and slow MC waves by the dependence of the rotation frequency on the applied field strength. The observed slow MC wave is damped but the observation provides a m...
The azimuthal version of the magnetorotational instability (MRI) is a nonaxisymmetric instability of a hydrodynamically stable differentially rotating flow under the influence of a purely or predominantly azimuthal magnetic field. It may be of considerable importance for destabilizing accretion disks, and plays a central role in the concept of the MRI dynamo. We report the results of a liquid m...
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