Abstract
In this paper, we use a laser optical technique to investigate the characteristics of a wavy Taylor vortex flow between two concentric cylinders, with the inner cylinder subjected to a wide range of predetermined acceleration and the outer one at rest. We focus on the inner/outer radius ratio of 0.894, with an acceleration (dRe/dt*) from 0.1123 to 2,247, and Reynolds number from Re/Rec = 1.0 to 36. The results show that, with increasing Reynolds number, there is an initial increase in the wavelength of the wavy vortex flow (λ), and a decrease in the wave speed (c) before they asymptote to a constant value, which is a function of the acceleration. As for the wave amplitude (A), it is found that the effect of acceleration is significant only in a very narrow range of Reynolds numbers.
| Original language | English |
|---|---|
| Pages (from-to) | 639-644 |
| Number of pages | 6 |
| Journal | Experiments in Fluids |
| Volume | 32 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 30 Jun 2002 |
Keywords
- acceleration measurement
- cylinders (shapes)
- laser applications
- Reynolds number
- turbulence
- wave effects
- Taylor vortices
- wave speed
- wavy Taylor vortex flow
- vortex flow