Oscillating-grid turbulence and its applications : a review/turbulence de grille oscillante et ses applications : une revue

• Main Authors: Yan, Jing, Cheng, Nian-Sheng, Tang, Hong-Wu, Tan, Soon Keat
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2012
• Subjects: DRNTU::Engineering::Civil engineering::Water resources
• Online Access: https://hdl.handle.net/10356/101739; http://hdl.handle.net/10220/7667
• Institution: Nanyang Technological University

Oscillating-grid turbulence (OGT) is characterized by its zero-mean flow, being two-dimensionally homogeneous in a certain region away from the grid plane. This homogeneous turbulence region that can be readily controlled is suitable for investigating hydraulic problems encountered in environmental engineering. This paper reviews a number of achievements obtained recently in the study of OGT and its applications. Several aspects are discussed including (1) characteristics of the turbulent structure; (2) mass transfer at the interface of air-fluid, solid-fluid or fluid-fluid; (3) sediment entrainment and suspension in zero-mean flow; and (4) utilization of OGT for investigating problems related to environmental engineering. Some suggestions for conducting further studies are also made.