华中科技大学学报（自然科学版）2024，Vol.52Issue(4)：113-120,8.DOI:10.13245/j.hust.240816
Taylor-Couette波状涡的周期性特征研究
Study on periodic characteristics of wavy vortex flow in Taylor-Couette
摘要
Abstract
The large eddy simulation(LES)method was applied to transient numerically simulate the vortex flow field of Taylor-Couette.The variation characteristics of the wavy vortex flow on the meridian plane of Taylor-Couette were studied,and the periodic variations of wavy vortex flow were analyzed with time under different rotational Reynolds numbers.Results show that the size,morphology,vortex center location of the vortices in the Taylor-Couette wavy vortex flow change periodically,while the morphology and characteristics of the adjacent vortices change in opposite tendency.The period of vortices and vortex nuclei are almost the same.When the rotational speed is 20 r/min,the period of vortices and vortex nuclei are 6.80 s and 6.83 s,respectively.When the rotational speed is 40 r/min,the period of vortices and vortex nuclei are 1.49 s and 1.50 s,respectively,but the vortex nuclei plays dominant in the periodic change process.With the increase of the rotational Reynolds number,the variation periods of wavy vortex decrease gradually,indicating that the morphology transformation process of Taylor-Couette vortex flow can be reflected and measured by the numerical variation of the period to a certain extent.关键词
大涡模拟/Taylor-Couette涡流场/波状涡/周期性/特征Key words
large eddy simulation/Taylor-Couette flow/wavy vortex flow/periodicity/characteristic分类
建筑与水利引用本文复制引用
毛玉红,陈超,王敏..Taylor-Couette波状涡的周期性特征研究[J].华中科技大学学报（自然科学版）,2024,52(4):113-120,8.基金项目
国家自然科学基金资助项目(51968038,51468029) （51968038,51468029）
甘肃省重点研发计划资助项目(23YFGA0048). （23YFGA0048）
