三维辐射转移框架：VII。欧拉坐标系中的任意速度场
A 3D radiative transfer framework: VII. Arbitrary velocity fields in the Eulerian frame
摘要：
本文给出了欧拉坐标系下三维任意速度场辐射传输问题的一种解法。该方法在我们的三维辐射转移框架中实现，并用于PHOENIX/3D代码。通过与我们的经过良好测试的1D同向移动框架辐射转移代码进行比较来测试，其中单调速度场的处理在拉格朗日框架中实现。欧拉公式不需要太多额外的内存，并且可以在最先进的计算机上使用，甚至具有1000个波长点的大规模应用也是可行的。
英文摘要：
A solution of the radiative-transfer problem in 3D with arbitrary velocity fields in the Eulerian frame is presented. The method is implemented in our 3D radiative transfer framework and used in the PHOENIX/3D code. It is tested by comparison to our well- tested 1D co-moving frame radiative transfer code, where the treatment of a monotonic velocity field is implemented in the Lagrangian frame. The Eulerian formulation does not need much additional memory and is useable on state-of-the-art computers, even large-scale applications with 1000's of wavelength points are feasible.
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