Drag reduction in turbulent boundary layers with half wave wall oscillations
type: Item
instance of: scholarly article
title: Drag reduction in turbulent boundary layers with half wave wall oscillations
zbMATH Open document ID: 1394.76056
DOI: 10.1155/2015/253249
author: Maneesh Mishra
author: Martin Skote
published in: Mathematical Problems in Engineering
publication date: 2018-08-27T00:00:00Z
review text: Summary: Spatial square waves with positive cycle are used as steady forcing technique to study drag reduction effects on a turbulent boundary layer flow. Pseudospectral method is used for performing direct numerical simulations on very high resolution grids. A smooth step function is employed to prevent Gibbs phenomenon at the sharp discontinuities of a square wave. The idea behind keeping only the positive cycle of the spatial forcing is to reduce the power consumption to boost net power savings. For some spatial frequency of the oscillations with half waves, it is possible to prevent recovery of skin friction back to the reference case values. A set of wall oscillation parameters is numerically simulated to study its effect on the power budget.
Mathematics Subject Classification ID: 76F40
zbMATH DE Number: 6925868
Wikidata QID: Q59117736
describes a project that uses: SIMSON
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2015/253249
OpenAlex ID: W1765578963
cites work: Turbulent drag reduction by spanwise wall oscillations
cites work: Transient response of Reynolds stress transport to spanwise wall oscillation in a turbulent channel flow
cites work: Critical assessment of turbulent drag reduction through spanwise wall oscillations
cites work: Changes in turbulent dissipation in a channel flow with oscillating walls
cites work: Near-wall streak modification by spanwise oscillatory wall motion and drag-reduction mechanisms
cites work: The effect of spanwise wall oscillation on turbulent pipe flow structures resulting in drag reduction
cites work: Comparison between spatial and temporal wall oscillations in turbulent boundary layer flows
cites work: Streamwise oscillation of spanwise velocity at the wall of a channel for turbulent drag reduction
cites work: Streamwise-travelling waves of spanwise wall velocity for turbulent drag reduction
cites work: Q3873786
cites work: Linear and nonlinear stability of the Blasius boundary layer
description: scientific article; zbMATH DE number 6925868