论文标题
太阳大气的3D辐射流体动力模拟中的声学波浪传播特性
Acoustic-gravity wave propagation characteristics in 3D radiation hydrodynamic simulations of the solar atmosphere
论文作者
论文摘要
在过去几十年中，太阳大气的三维辐射磁动力模拟的现实程度取得了巨大的进步。最常用的数值代码中有四个是双佛罗斯兰州，CO5Bold，Mancha3d和Muram。在这里，我们通过测量各种高度处的声学波浪的分散性关系来测试和比较模型中的波传播特性。我们发现各种模型之间存在很大差异。波浪功率的高度依赖性，尤其是高频波的高度依赖性在模型之间最多不同，而几个模型的相位差异光谱显示出意外的特征，包括$ \ pm180^\ circ $相位跳跃。
There has been tremendous progress in the degree of realism of three-dimensional radiation magneto-hydrodynamic simulations of the solar atmosphere in the past decades. Four of the most frequently used numerical codes are Bifrost, CO5BOLD, MANCHA3D, and MURaM. Here we test and compare the wave propagation characteristics in model runs from these four codes by measuring the dispersion relation of acoustic-gravity waves at various heights. We find considerable differences between the various models. The height dependence of wave power, in particular of high-frequency waves, varies by up to two orders of magnitude between the models, and the phase difference spectra of several models show unexpected features, including $\pm180^\circ$ phase jumps.
