Effect of Strouhal Number on Flow Characteristics in a Symmetric Sinusoidal Wavy-Walled Channel for Oscillatory Flow

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yuji Kawamura²  Hisashi Miyashita¹  Tatsuo Nishimura¹  Shinichiro Murakami² 

[1] Department of Chemical Engineering, Toyama University;Department of Chemical Engineering, Hiroshima University

关键词: Fluid Mechanics;    Oscillatory Flow;    Wavy Channel;    Unsteady Separation;    Steady Streaming;    Finite Element Method;    Flow Visualization;   

DOI  :  10.1252/jcej.22.505

来源: Maruzen Company Ltd

【 摘 要 】

References(11)Cited-By(3)The effect of the Strouhal number on several flow characteristics in a wavy-walled channel was numerically and experimentally studied for oscillatory flow. Although oscillatory flow is characterized by a vortex formation/ejection cycle for any Strouhal number, the peak of vortex strength appears at an intermediate Strouhal number for both instantaneous flow and steady streaming. The time required for erosion of the ejected vortex at the centerline of the channel is closely related to the vortex strength at the instant of zero flow rate.

【 授权许可】

Unknown