标题： 可变密度模型用于瑞利-泰勒不稳定性及其转化为扩散、非均匀、不可压缩的纳维-斯托克斯方程 显示英文标题

标题： The Variable Density Model for the Rayleigh-Taylor Instability and its transformation to the diffusive, inhomogeneous, incompressible Navier-Stokes equations

摘要： 如何将控制可混流体两不可压缩流体混合的变密度模型（VDM）转化为由混合层组成密度$\rho$梯度驱动的非均匀、不可压缩纳维-斯托克斯方程的扩散版本。这表明浮力驱动流如何驱动并增强纳维-斯托克斯湍流。势涡度$q = \omega\cdot\nabla\rho$的作用也进行了讨论。 显示英文摘要

摘要： It is shown how the variable density model (VDM) that governs the Rayleigh-Taylor instability (RTI) for the miscible mixing of two incompressible fluids can be transformed into a diffusive version of the inhomogeneous, incompressible Navier-Stokes equations forced by gradients of the composition density $\rho$ of the mixing layer. This demonstrates how buoyancy-driven flows drive and enhance Navier-Stokes turbulence. The role of the potential vorticity $q = \omega\cdot\nabla\rho$ is also discussed.