Characteristics of colliding density currents: A numerical and theoretical study
Characteristics of colliding density currents: A numerical and theoretical study
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碰撞密度流的特征：数值和理论研究
DOI：
10.1002/qj.3337
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发表时间：
2018
影响因子：
8.9
通讯作者：
G. Rooney
中科院分区：
文献类型：
--
作者：
C. Cafaro;G. Rooney
本文提出了理想化框架中两种碰撞密度流的一组新数值模拟，将布辛涅斯克涡度方程集成到矩形有界域中。根据最近的实验室实验，这些模拟用于检查碰撞的动力学特征。碰撞动力学呈现出各种有趣的特征。在这里，我们重点关注两个不等密度流前端的界面斜率以及碰撞后流体达到的最大高度。对于先前对流事件碰撞冷池二次触发大气对流，这些可能分别影响碰撞隆起的位置和动量。
This paper presents a new set of numerical simulations of two colliding density currents in a idealized framework, integrating the Boussinesq vorticity equation in a rectangular bounded domain. These simulations are used to examine the dynamical features of the collision, in the light of recent laboratory experiments. The collision dynamics present various interesting features. Here we have focused on the interface slope at the front of the two unequal density currents and on the maximum height reached by the fluid after the collision. For the secondary triggering of atmospheric convection by colliding cold pools from previous convective events, these may affect the positioning and the momentum of the collision uplift, respectively.