NUMERICAL AND EXPERIMENTAL TAYLOR FLOW INSTABILITIES

Numerical and Experimental Taylor Flow Instabilities
presents the relationship between the onset of
Taylor instability and appearance of what is
commonly known as turbulence in narrow gaps
between two cylinders. A question open to debate is
whether the flow formations observed during Taylor
instability regimes are, or are related to the
actual turbulence as it is presently modeled in
micro-scale clearance flows.

FEATURES
Flow patterns, velocity profiles and torques are
presented in both Taylor and wavy vortex regimes.

The formation and collapse of Taylor and wavy
vortices are clearly observed.

A new model for predicting the flow behavior in long
and short journal bearing films in the transition
regime is proposed and verified. A comparison is
made between the results of this model and the four
most accepted turbulence models (Constantinescu, Ng-
Pan, Hirs and Gross et al.).

Autorentext

Dr. Deng received his Ph.D. in mechanical engineering from The University of Akron, Akron, Ohio, USA in 2007. His research interests are in the areas of simulations, numerical and experimental thermo-fluid sciences.

Klappentext

Numerical and Experimental Taylor Flow Instabilities presents the relationship between the onset of Taylor instability and appearance of what is commonly known as "turbulence" in narrow gaps between two cylinders. A question open to debate is whether the flow formations observed during Taylor instability regimes are, or are related to the actual "turbulence" as it is presently modeled in micro-scale clearance flows.FEATURESFlow patterns, velocity profiles and torques are presented in both Taylor and wavy vortex regimes.The formation and collapse of Taylor and wavy vortices are clearly observed.A new model for predicting the flow behavior in long and short journal bearing films in the transition regime is proposed and verified. A comparison is made between the results of this model and the four most accepted turbulence models (Constantinescu, Ng-Pan, Hirs and Gross et al.).