Turbulent flows inside a rotating curved rectangular channel for different aspect ratios
✍ Scribed by Koji Kikuyama; Takao Maeda; Takashi Yokoi
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 684 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0894-1777
No coin nor oath required. For personal study only.
✦ Synopsis
Effects of channel rotation have been investigated both experimentally and theoretically by using channels that rotate orthogonally in order to clarify the flow nature inside passages of turbomachinery. In this article we present velocity and turbulence measurements inside a rotating curved rectangular channel for three aspect ratios of the cross section, 1:1, 2:1, and 4:1. In a channel having a high aspect ratio, direct effects of the channel rotation and wall curvature on turbulence are dominant. With the decrease in aspect ratio, secondary flows generated by pressure imbalance deform the velocity distribution, and the prediction of turbulence behavior tends to be intractable because of the occurrence of the secondary motion and because of the highly three-dimensional nature of the flow.