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Neutral stability curves of low-frequency Görtler flow generated by free-stream vortical disturbances
| Content Provider | Semantic Scholar |
|---|---|
| Author | Viaro, Samuele Ricco, Pierre |
| Copyright Year | 2018 |
| Abstract | The neutral curves of the boundary layer Gortler-vortex flow generated by free-stream disturbances, i.e., curves that distinguish the perturbation flow conditions of growth and decay, are computed through a receptivity study for different Gortler numbers, wavelengths, and low frequencies of the free-stream disturbance. The perturbations are defined as Klebanoff modes or strong and weak Gortler vortices, depending on their growth rate. The critical Gortler number below which the inviscid instability due to the curvature never occurs is obtained and the conditions for which only Klebanoff modes exist are thus revealed. A streamwise-dependent receptivity coefficient is defined and we discuss the impact of the receptivity on the (Formula presented.)-factor approach for transition prediction. |
| File Format | PDF HTM / HTML |
| DOI | 10.1017/jfm.2018.270 |
| Volume Number | 845 |
| Alternate Webpage(s) | http://eprints.whiterose.ac.uk/130237/1/2018-viaro-ricco-jfmr-sam.pdf |
| Alternate Webpage(s) | https://doi.org/10.1017/jfm.2018.270 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
