### Abstract

Receptivity and stability of a two-dimensional laminar wall jet is considered. The wall jet and the disturbance source examined in a direct numerical simulation by S. Wernz and H. F. Fasel (AIAA Paper 96-0079) are chosen for the analysis. The disturbances are introduced by blowing and suction through a slot in the wall. The disturbances of two frequencies (28 and 56 Hz) are considered. Because two eigenmodes may be unstable in the wall-jet flow, both of them are taken into account for each frequency. Therefore, the linear receptivity problem is solved for two pairs of eigenmodes, and their development and interaction downstream from the source are analyzed. The analysis allows one to explain the behavior of the fundamental and subharmonic disturbances observed in the numerical simulation.

Original language | English (US) |
---|---|

Pages (from-to) | 1769-1771 |

Number of pages | 3 |

Journal | Physics of Fluids |

Volume | 10 |

Issue number | 7 |

State | Published - Jul 1998 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Fluid Flow and Transfer Processes
- Computational Mechanics
- Mechanics of Materials
- Physics and Astronomy(all)
- Condensed Matter Physics

### Cite this

**Subharmonic resonance in a laminar wall jet.** / Tumin, Anatoli.

Research output: Contribution to journal › Article

*Physics of Fluids*, vol. 10, no. 7, pp. 1769-1771.

}

TY - JOUR

T1 - Subharmonic resonance in a laminar wall jet

AU - Tumin, Anatoli

PY - 1998/7

Y1 - 1998/7

N2 - Receptivity and stability of a two-dimensional laminar wall jet is considered. The wall jet and the disturbance source examined in a direct numerical simulation by S. Wernz and H. F. Fasel (AIAA Paper 96-0079) are chosen for the analysis. The disturbances are introduced by blowing and suction through a slot in the wall. The disturbances of two frequencies (28 and 56 Hz) are considered. Because two eigenmodes may be unstable in the wall-jet flow, both of them are taken into account for each frequency. Therefore, the linear receptivity problem is solved for two pairs of eigenmodes, and their development and interaction downstream from the source are analyzed. The analysis allows one to explain the behavior of the fundamental and subharmonic disturbances observed in the numerical simulation.

AB - Receptivity and stability of a two-dimensional laminar wall jet is considered. The wall jet and the disturbance source examined in a direct numerical simulation by S. Wernz and H. F. Fasel (AIAA Paper 96-0079) are chosen for the analysis. The disturbances are introduced by blowing and suction through a slot in the wall. The disturbances of two frequencies (28 and 56 Hz) are considered. Because two eigenmodes may be unstable in the wall-jet flow, both of them are taken into account for each frequency. Therefore, the linear receptivity problem is solved for two pairs of eigenmodes, and their development and interaction downstream from the source are analyzed. The analysis allows one to explain the behavior of the fundamental and subharmonic disturbances observed in the numerical simulation.

UR - http://www.scopus.com/inward/record.url?scp=2942703399&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2942703399&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:2942703399

VL - 10

SP - 1769

EP - 1771

JO - Physics of Fluids

JF - Physics of Fluids

SN - 0031-9171

IS - 7

ER -