Higher order turbulent flow characteristics of oscillatory flow over a wall-mounted obstacle

Santosh Kumar Singh; Pankaj Kumar Raushan; Koustuv Debnath; Bijoy S. Mazumder

doi:10.1080/09715010.2018.1453880

Higher order turbulent flow characteristics of oscillatory flow over a wall-mounted obstacle

Santosh Kumar Singh^*, Pankaj Kumar Raushan, Koustuv Debnath, Bijoy S. Mazumder

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The paper presents an experimental study in a laboratory flume to investigate the combined wave–current flow over a wall-mounted cubic obstacle. Detailed velocity data were collected using three-dimensional (3D) micro-acoustic Doppler velocimeter from upstream to downstream of the cube along the centerline of the flume. This study examines the spectra, co-spectra, and turbulence kinetic energy flux analysis under the influence of cube in the turbulent boundary layer. It is observed that stream-wise spectral and co-spectral energy distributions vary with the addition of surface wave. Particular attention is also given to understand the behavior of higher order moments to explicitly account for turbulent momentum transport characteristics over wall-mounted cube under wave–current interactions.

Original language	English
Pages (from-to)	84-95
Number of pages	12
Journal	ISH Journal of Hydraulic Engineering
Volume	26
Issue number	1
DOIs	https://doi.org/10.1080/09715010.2018.1453880
State	Published - 2 Jan 2020
Externally published	Yes

Keywords

ADV
cube
spectra
turbulence
wave–current

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10.1080/09715010.2018.1453880

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abstract = "The paper presents an experimental study in a laboratory flume to investigate the combined wave–current flow over a wall-mounted cubic obstacle. Detailed velocity data were collected using three-dimensional (3D) micro-acoustic Doppler velocimeter from upstream to downstream of the cube along the centerline of the flume. This study examines the spectra, co-spectra, and turbulence kinetic energy flux analysis under the influence of cube in the turbulent boundary layer. It is observed that stream-wise spectral and co-spectral energy distributions vary with the addition of surface wave. Particular attention is also given to understand the behavior of higher order moments to explicitly account for turbulent momentum transport characteristics over wall-mounted cube under wave–current interactions.",

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Higher order turbulent flow characteristics of oscillatory flow over a wall-mounted obstacle

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