How flow becomes turbulent
Sub-harmonic resonance in zero pressure gradient three-dimensional boundary layer flow occurs in the classical N-type pathway of turbulence transition.Three-dimensionality incurs exorbitant computational demands on the numerical simulations. Imposition of a spectral method and a non-uniform gr...
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| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/106124 http://hdl.handle.net/10220/23964 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Sub-harmonic resonance in zero pressure gradient three-dimensional boundary layer flow occurs in the
classical N-type pathway of turbulence transition.Three-dimensionality incurs exorbitant computational demands on
the numerical simulations. Imposition of a spectral method
and a non-uniform grid countervails the impractical
computational demands.Eigenvalue analysis ascertains
ranges of stability of the numerical method. Validation of the
numerical method versus the three-dimensional OS equation
avers confidence in the accuracy of the model. Numerical
realizations of the generation, amplification, and interaction of
two- and three-dimensional sub-harmonic waves agree
qualitatively with classical experiments. |
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