2024-03-29T08:27:00Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00007538
2023-01-16T03:53:02Z
320:321:322
微小重力場での近臨界表面液ジェットの不安定性 (第2報, 理論的考察)
Instability of a Thin Liquid Jet with Near-Critical Mixing Surface under Micro-Gravity Condition (2nd Report, Theoretical Consideration)
梅村, 章
UMEMURA, Akira
若島, 勇一郎
WAKASHIMA, Yuichiro
open access
日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである。
Atomization
Stability Analysis
Near-Critical Mixing Surface
Surface Tension
The experimental results presented in the first report are physically interpreted on theoretical grounds to reveal the disintegration mechanism of the 0(1)-Weber-number liquid jet with near critical mixing surface. The wavelength at which the liquid jet breaks up is much shorter than that of Rayleigh instability, suggesting that the shear layer developed on the near-critical mixing surface plays an important role in excitation of the instability. Vortex rings, which grows by Kelvin instability, entrain and impinge the surrounding dense gas on the contracting part of the liquid column, so that the restoring force associated with the axial surface tension is cancelled by the dynamic pressure of the impinging gas, and the liquid column breaks up by the action of contracting force due to the circumferential surface tension. This mechanism leads to a concept which bridges the Rayleigh type of atomization and the large-scale vortical structures of a supercritical liquid jet.
日本機械学会
2002-03
jpn
journal article
VoR
http://hdl.handle.net/2237/9228
https://nagoya.repo.nii.ac.jp/records/7538
http://ci.nii.ac.jp/naid/110002387039/
0387-5016
日本機械学會論文集 B編
68
667
892
898
https://nagoya.repo.nii.ac.jp/record/7538/files/JsMecEng_B_68-667-892.pdf
application/pdf
601.0 kB
2018-02-19