Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-28
Astronomy and Astrophysics
Astrophysics
32 pages, 13 figures, figures included in page total
Scientific paper
10.1086/317094
The effect of optically thin radiative cooling on the Kelvin-Helmholtz instability of three dimensional jets is investigated via linear stability theory and nonlinear hydrodynamical simulation. Two different cooling functions are considered: radiative cooling is found to have a significant effect on the stability of the jet in each case. The wavelengths and growth rates of unstable modes in the numerical simulations are found to be in good agreement with theoretical predictions. Disruption of the jet is found to be sensitive to the precessional frequency at the origin with lower frequencies leading to more rapid disruption. Strong nonlinear effects are observed as the result of the large number of normal modes in three dimensions which provide rich mode-mode interactions. These mode-mode interactions provide new mechanisms for the formation of knots in the flows. Significant structural features found in the numerical simulations appear similar to structures observed on protostellar jets.
Hardee Philip
Stone James
Xu Jianjun
No associations
LandOfFree
The Stability of Radiatively Cooled Jets in Three Dimensions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Stability of Radiatively Cooled Jets in Three Dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Stability of Radiatively Cooled Jets in Three Dimensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-283155