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Transient perturbation growth of vortex rings
| Content Provider | Scilit |
|---|---|
| Author | Chen, Fei Wang, Bofu Wacks, Daniel Cabezon, Daniel Mao, Xuerui |
| Copyright Year | 2016 |
| Description | Journal: Journal of Physics: Conference Series Perturbations to a vortex ring with largest transient energy growth are calculated and applied to drive the vortex ring to evolve. Optimal initial perturbations appear at azimuthal wave numbers β = 0 and β = 9. The former was described as 'axial flow' and is not related to the breakdown of the ring, while the latter is critical to the ring breakdown process as observed in previous direct numerical simulation (DNS) with random initial noise input. In the present work, DNS is conducted to study the nonlinear development of the optimal perturbations, and good agreement with past studies is achieved. |
| Related Links | http://iopscience.iop.org/article/10.1088/1742-6596/753/3/032049/pdf |
| ISSN | 17426588 |
| e-ISSN | 17426596 |
| DOI | 10.1088/1742-6596/753/3/032049 |
| Journal | Journal of Physics: Conference Series |
| Volume Number | 753 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2016-09-30 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Conference Series Fluids and Plasmas Physics Vortex Ring Numerical Simulation Rings Perturbations Transient Perturbation Perturbation Growth Ring Breakdown |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |