Swirling flow of a viscoelastic fluid with free surface, part I: Experimental analysis of vortex motion by PIV
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Swirling flow of a viscoelastic fluid with free surface, part I: Experimental analysis of vortex motion by PIV
- 发表刊物：
- ASME J. Fluids Engineering
- 摘要：
- The swirling flows of water and CTAC(cetyltrimethyl ammonium chloride) surfactant solutions (50–1000 ppm) in an open cylindrical container with a rotating disc at the bottom were experimentally investigated by use of a double-pulsed PIV (particle image velocimetry) system. The flow pattern in the meridional plane for water at the present high Reynolds number of 4.3104 differed greatly from that at low Reynolds numbers, and an inertia-driven vortex was pushed to the corner between the free surface and the cylindrical wall by a counter-rotating vortex caused by vortex breakdown. For the 1000 ppm surfactant solution flow, the inertia-driven vortex located at the corner between the bottom and the cylindrical wall whereas an elasticity-driven reverse vortex governed the majority of the flow field. The rotation of the fluid caused a deformation of
the free surface with a dip at the center. The dip was largest for the water case and
decreased with increasing surfactant concentration. The value of the dip was related to determining the solution viscoelasticity for the onset of drag reduction.
- 合写作者：
- J. J. Wei, F. C. Li, B. Yu, Y. Kawaguchi
- 卷号：
- 128(1)
- 页面范围：
- 69-76
- 是否译文：
- 否
- 发表时间：
- 2006-01-11