@inproceedings{oai:jaxa.repo.nii.ac.jp:00038216,
 author = {秋永, 剛 and 水島, 二郎 and Akinaga, Takeshi and Mizushima, Jiro},
 book = {航空宇宙技術研究所特別資料: 境界層遷移の解明と制御研究会講演論文集　第29回・第30回, Special Publication of National Aerospace Laboratory: Proceedings of the 29th and 30th NAL Workshops on Investigation and Control of Boundary-Layer Transition},
 month = {Dec},
 note = {Interactions between wakes in a flow past a row of square bars, which is placed across a uniform flow, are investigated by numerical simulations on the assumption of two-dimensional incompressible flow. The flow is steady and symmetric along both streamwise centerlines through the center of each square bar and the center between two adjacent square bars at small Reynolds numbers. However, the flow becomes asymmetric along the centerlines between two adjacent square bars at the Reynolds numbers larger than a critical value in some cases, where couplings of two adjacent wakes are observed. Otherwise, the flow becomes periodic in time at the Reynolds numbers larger than another critical value, where the wakes behind the square bars are oscillatory. It is found by numerical simulations that vortices are shed synchronously from every couple of adjacent square bars in the same phase or in the anti-phase depending upon the distance between the bars when the flow is periodic in time. It is confirmed that the coupling of two adjacent wakes occurs due to the pitchfork bifurcation, while the synchronous shedding of vortices occurs due to the Hopf bifurcation. The critical Reynolds numbers of the transitions are evaluated numerically and the bifurcation diagram of the flow is obtained., 資料番号: AA0045947025, レポート番号: NAL SP-56},
 pages = {79--82},
 publisher = {航空宇宙技術研究所, National Aerospace Laboratory (NAL)},
 title = {角柱列を過ぎる後流の非線形相互作用},
 volume = {56},
 year = {2002}
}