论文标题
由内部重力波驱动的非线性混合
Nonlinear Mixing driven by Internal Gravity Waves
论文作者
论文摘要
流体动力波通过恒星内部传播，运输能量和角动量。他们还可以推荐流体元素来产生混合，但是这种效果尚未从第一原理中量化。由于内部重力波在热和组成分层的流体中，我们得出了领先的非线性波混合。我们发现，这是波速度的第四幂，它被组成分层抑制，并且取决于热和组成扩散。
Hydrodynamic waves propagate through stellar interiors, transporting energy and angular momentum. They can also advect fluid elements to produce mixing, but this effect has not been quantified from first principles. We derive the leading order non-linear wave mixing due to internal gravity waves in a thermally and compositionally-stratified fluid. We find that this scales as the fourth power of wave velocity, that it is suppressed by compositional stratification, and that it depends on the thermal and compositional diffusivities.
