Linear two-dimensional stability of a Burgers vortex layer

• Kamen N. Beronov

  Research Institute for Mathematical Sciences, Kyoto University, 606-01 Kyoto, Japan

• Shigeo Kida

  Research Institute for Mathematical Sciences, Kyoto University, 606-01 Kyoto, Japan

抄録

A linear stability analysis is presented for a stationary Burgers vortex layer in irrotational straining flow, to normal mode disturbances invariant in the direction of main flow vorticity. The whole neutral curve is calculated by combining numerical and asymptotic analysis. It is similar to that for free mixing layers which are always unstable, except that there is unconditional stability below a critical Reynolds number, in agreement with the long-wave asymptotic result by Neu [J. Fluid Mech. 143, 253 (1984)]. The Reynolds number compares shear flow vorticity versus stretching rate and diffusion, so both latter factors are stabilizing if strong enough. Neutral disturbances represent standing waves.

収録刊行物

• Physics of Fluids

  Physics of Fluids 8 (4), 1024-1035, 1996-04-01

  AIP Publishing

キーワード

• Condensed Matter Physics
• Fluid Flow and Transfer Processes
• Mechanics of Materials
• Computational Mechanics
• Mechanical Engineering

詳細情報

• CRID: 1363951794360516224
• NII論文ID: 30015734142
• NII書誌ID: AA00773996
• DOI: 10.1063/1.868879
• ISSN: 10897666
• ISSN: 10706631
• Web Site: https://pubs.aip.org/aip/pof/article-pdf/8/4/1024/19244364/1024_1_online.pdf
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