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Title: Drag Reduction in Turbulent Boundary Layers with Half Wave Wall Oscillations
Authors: Mishra, Maneesh
Skote, Martin
Issue Date: 2015
Source: Mishra, M., & Skote, M. (2015). Drag Reduction in Turbulent Boundary Layers with Half Wave Wall Oscillations. Mathematical Problems in Engineering, 2015, 253249-.
Series/Report no.: Mathematical Problems in Engineering
Abstract: 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.
DOI: 10.1155/2015/253249
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2015 Maneesh Mishra and Martin Skote. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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