Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients
42 p.
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2016
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sg-ntu-dr.10356-818612023-03-04T17:13:42Z Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients Skote, Martin Henningson, D. S. Henkes, R. A. W. M. School of Mechanical and Aerospace Engineering Turbulent boundary layers DNS 42 p. Direct numerical simulations of the Navier–Stokes equations have been carried out with the objective of studying turbulent boundary layers in adverse pressure gradients. The boundary layer flows concerned are of the equilibrium type which makes the analysis simpler and the results can be compared with earlier experiments and simulations. This type of turbulent boundary layers also permits an analysis of the equation of motion to predict separation. The linear analysis based on the assumption of asymptotically high Reynolds number gives results that are not applicable to finite Reynolds number flows. A different non-linear approach is presented to obtain a useful relation between the freestream variation and other mean flow parameters. Comparison of turbulent statistics from the zero pressure gradient case and two adverse pressure gradient cases shows the development of an outer peak in the turbulent energy in agreement with experiment. The turbulent flows have also been investigated using a differential Reynolds stress model. Profiles for velocity and turbulence quantities obtained from the direct numerical simulations were used as initial data. The initial transients in the model predictions vanished rapidly. The model predictions are compared with the direct simulations and low Reynolds number effects are investigated. Accepted version 2016-07-27T08:07:17Z 2019-12-06T14:41:47Z 2016-07-27T08:07:17Z 2019-12-06T14:41:47Z 1998 1998 Journal Article Skote, M., Henningson, D. S., & Henkes, R. A. W. M. (1998). Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients. Flow, Turbulence and Combustion, 60(1), 47-85. 1386-6184 https://hdl.handle.net/10356/81861 http://hdl.handle.net/10220/41007 10.1023/A:1009934906108 159523 en Flow, Turbulence and Combustion © 1998 Kluwer Academic Publishers. This is the author created version of a work that has been peer reviewed and accepted for publication by Flow, Turbulence and Combustion, Kluwer Academic Publishers. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1023/A:1009934906108]. application/pdf |
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English |
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Turbulent boundary layers DNS |
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Turbulent boundary layers DNS Skote, Martin Henningson, D. S. Henkes, R. A. W. M. Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients |
| description |
42 p. |
| author2 |
School of Mechanical and Aerospace Engineering |
| author_facet |
School of Mechanical and Aerospace Engineering Skote, Martin Henningson, D. S. Henkes, R. A. W. M. |
| format |
Article |
| author |
Skote, Martin Henningson, D. S. Henkes, R. A. W. M. |
| author_sort |
Skote, Martin |
| title |
Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients |
| title_short |
Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients |
| title_full |
Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients |
| title_fullStr |
Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients |
| title_full_unstemmed |
Direct Numerical Simulation of Self-Similar Turbulent Boundary Layers in Adverse Pressure Gradients |
| title_sort |
direct numerical simulation of self-similar turbulent boundary layers in adverse pressure gradients |
| publishDate |
2016 |
| url |
https://hdl.handle.net/10356/81861 http://hdl.handle.net/10220/41007 |
| _version_ |
1759857621281538048 |