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A viscous vortex single-mode bubble evolution model of Rayleigh-Taylor instability and its numerical study

机译:瑞利-泰勒不稳定性的粘性涡旋单模气泡演化模型及其数值研究

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This paper has developed a viscous single-mode bubble evolution model of Rayleigh-Taylor instabilities (RTIs), which is an extension of the single-mode potential models of Jacobs and Rikanati. The viscous vortex model explained the viscous effects of its early stage of RTI development for low Atwood number flow. Furthermore, direct numerical simulations of RTI are studied with Navier-Stokes equations and a transport-diffusive equation. Agreement between the theoretical model and the numerical results shows that simulations of these instabilities is feasible using the mathematical miscible fluid model simulating RTI.
机译:本文建立了瑞利-泰勒不稳定性(RTIs)的粘性单模气泡演化模型,该模型是雅各布斯和里卡纳蒂单模势模型的扩展。粘性涡模型解释了RTI研发早期对于低阿特伍德数流的粘性影响。此外,利用Navier-Stokes方程和传输扩散方程研究了RTI的直接数值模拟。理论模型与数值结果之间的一致性表明,使用数学上可混溶的流体模型来模拟RTI来模拟这些不稳定性是可行的。

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