Solar and Planetary Studies at the Fluid and Complex Systems Research Centre, Coventry University

旋转和磁场在宇宙中无处不在，在太阳和行星的内部动力学、太阳表面和日球层现象中起着至关重要的作用。在磁流体力学的框架内，流体运动受到磁场的影响，而磁场要么被流体的感应运动（发电机作用）放大，要么迅速消散（导致加热）。其他不稳定性和波动可能出现，并产生非线性饱和状态，即湍流状态。磁场、旋转和湍流之间的非线性相互作用是理解恒星和行星内部传输、太阳风湍流及其随时间演变的关键挑战。我们提出了一个及时的、协同的方案来研究一些与太阳深层内部与太阳表面现象、太阳风湍流和行星内部的非线性动力学有关的突出问题。具体而言，我们建议在未来三年内开展以下五个项目：项目一：太阳变率、运输和演化的随机模拟。项目2：螺旋磁旋型不稳定性产生的非线性流动状态和湍流。项目3：太阳风湍流中的加热和信息丢失。项目4：内部海洋、冰、冰巨星和冰海洋世界界面层中的湍流对流输送。项目5：对流太阳型恒星的长期演化。项目5是一个实验项目，而其他的是理论/计算项目。我们解决了STFC科学挑战B。“恒星和行星系统是如何发展的，它们如何支持生命的存在”（项目1-5）和A：“宇宙是如何开始的，它是如何进化的？”（项目1和项目5）。我们将结合申请人在流体（流体力学和磁流体力学）和等离子体的理论、计算和实验方面的关键互补技能，并将与致力于观察新出现数据的同事密切合作，以创造世界级的研究（STFC第一个战略目标）。

Rotation and magnetic fields are ubiquitous in the universe and play a crucial role in the interior dynamics of the Sun and planets, solar surface, and heliospheric phenomena. Within the framework of magnetohydrodynamics, the fluid motion is influenced by magnetic fields while the latter is either amplified by the inductive motion of the fluid (dynamo action) or rapidly dissipated (leading to heating). Other instabilities and waves may arise and produce nonlinearly saturated states which are turbulent. Nonlinear interactions between the magnetic field, rotation, and turbulence are the key challenge in understanding the transport in the interior of stars and planets, solar wind turbulence, and their evolution over time. We propose a timely, synergistic programme to investigate some of these outstanding problems pertinent to the nonlinear dynamics of the solar deep interior to solar surface phenomena, solar wind turbulence, and planetary interiors. Specifically, we propose the following five projects in the next three years: Project 1: Stochastic modelling of solar variability, transport, and evolution. Project 2: Nonlinear flow states and turbulence produced by helical magnetorotational-type instabilities. Project 3: Heating and the loss of information in solar wind turbulence. Project 4: Turbulent convective transport in the interior ocean, ice, and interface layers of ice giants and icy ocean worlds. Project 5: Long-term evolution of convective, solar-type stars. Project 5 is an experimental project while the others are theoretical/computational. We address key STFC Science Challenge B. "How do stars and planetary systems develop and how do they support the existence of life'' (Projects 1-5) and A: "How did the Universe begin and how is it evolving?'' (Projects 1 & 5). We will combine the key, complementary skills of the applicants in theory, computation and experiments in fluids (hydrodynamics and magnetohydrodynamics) and plasmas, and will benefit from close collaborations with colleagues working on observations of newly emerging data to create world-class research (STFC 1st strategic goal).