Nonlocal thermal transport in solar flares
Nonlocal thermal transport in solar flares
复制标题
太阳耀斑中的非局域热传输
DOI：
10.1086/165608
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
C. DeVore
中科院分区：
文献类型：
--
作者：
J. Karpen;C. DeVore
假设经典的热传输，本地有限的热传输，和非本地热传输的耀斑太阳大气建模。经典的，本地的，和非本地的热通量表达式产生显着不同的温度，密度和速度分布在整个耀斑的上升阶段。色球物质的蒸发在非局部情况下比在经典或局部计算中更早开始，但达到更低的向上速度。在非定域计算中，由于离域和通量限制的综合作用，得到了更高的日冕温度。在这三种情况下，峰值速度和动量大致相同。一个更脉冲的能量释放影响的非局部模型的演化比经典和局部限制的情况下。23篇参考文献。
A flaring solar atmosphere is modeled assuming classical thermal transport, locally limited thermal transport, and nonlocal thermal transport. The classical, local, and nonlocal expressions for the heat flux yield significantly different temperature, density, and velocity profiles throughout the rise phase of the flare. Evaporation of chromospheric material begins earlier in the nonlocal case than in the classical or local calculations, but reaches much lower upward velocities. Much higher coronal temperatures are achieved in the nonlocal calculations owing to the combined effects of delocalization and flux limiting. The peak velocity and momentum are roughly the same in all three cases. A more impulsive energy release influences the evolution of the nonlocal model more than the classical and locally limited cases. 23 references.