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 ±180° phase jumps. This article is part of the Theo Murphy meeting issue ‘High-resolution wave dynamics in the lower solar atmosphere’.

中文翻译：

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太阳大气三维辐射流体动力学模拟中的声重力波传播特性

在过去的几十年里，太阳大气的三维辐射磁流体动力学模拟的真实程度取得了巨大的进步。四个最常用的数字代码是 Bifrost、CO5BOLD、MANCHA3D 和 MURaM。在这里，我们通过测量声重力波在不同高度的色散关系来测试和比较这四个代码模型运行中的波传播特性。我们发现各种模型之间存在相当大的差异。波浪功率的高度相关性，特别是高频波，在模型之间变化高达两个数量级，并且几个模型的相位差谱显示出意想不到的特征，包括 ±180° 相位跳跃。本文是 Theo Murphy 会议问题“低层太阳大气中的高分辨率波动力学”的一部分。