The structure and evolution of radiatively cooling jets
The structure and evolution of radiatively cooling jets
复制标题
辐射冷却射流的结构和演变
DOI：
--
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
A. Konigl
中科院分区：
文献类型：
--
作者：
J. Blondin;B. Fryxell;A. Konigl
目前用于表征辐射冷却超声速射流的结构和演化的二维模拟表明，冷却射流的形态类似于绝热流出的形态，但具有根本的区别，即当两个主激波中的任一个后面的冷却距离小于射流半径时，在射流头部的激波气体中将冷凝出致密的冷壳。对于非常高的冷却速率，聚集在射流头部的材料形成了一个延伸的冷气塞，类似于在强磁化绝热射流的数值模拟中观察到的鼻锥。研究了射流特性与束流密度比和辐射冷却强度的关系。参考文献52篇。
The two-dimensional simulations presently used to characterize the structure and evolution of radiatively cooling supersonic jets reveal that cooling jet morphologies resemble those of adiabatic outflows, but with the fundamental difference that a dense, cold shell will condense out of the shocked gas at the head of the jet when the cooling distance behind either of the two principal shocks is smaller than the jet radius. For very high cooling rates, the material that accumulates at the head of the jet forms an extended plug of cold gas resembling the nose cone observed in numerical simulations of strongly magnetized adiabatic jets. An investigation is made of the dependence of jet properties on the density ratio between the beam and the ambient medium, as well as on the strength of radiative cooling. 52 refs.