308 全体安定性解析による円形噴流の二次不安定の解析(FM-4 流れ解析の基礎について)

概要

論文の詳細を見る
We applied global instability analysis to the braid region between neighbouring vortex rings of round jets to investigate the cause of diverse evolution in available experimental and numerical data. Eigenvalues of first several modes are quite close with each other, suggesting that any mode of which may be accepted quite accidentally depending on the spectrum of the incoming disturbance. By putting the several unstable modes obtained by the analysis on the base flow, their temporal growth shoewed the linearlity within the linear regime of secondary instability, which indicates that the above-mentioned diversity is not necessarily substantial property of braid region but expected to be avoided by setting up the conditions completely identical.
一般社団法人日本機械学会の論文
2001-03-16