环境流场对双涡相互作用的影响

本文在文献1]的基础上,进一步应用正压无辐散模式就环境流场对双涡相互作用的影响进行了数值模拟研究。试验结果表明,环境流场对双涡的相互作用确有重要影响,它可以加剧双涡的气旋性互旋和促使其相互趋近.也可以抵销双涡间的互旋作用,并且还可使相距较近的两个涡旋重新分开。上述各种情况取决于双涡的相对位置及其与环境流场的不同配置。 

THE INFLUENCE OF ENVIRONMENTAL FLOW ON THE INTERACTIONS BETWEEN BINARY VORTICES

In this paper,based on the work of Wang and Zhu (1989),the influence of environmental flow on the interactions between binary vortices (IBBV) is simulated and studied by using a non-divergent barotropic model. The experimental result demonstrates that the environmental flow has significant influence on the IBBV. For the two vortices,the environmental flow intensifies their mutual cyclonic rotation to make them tend to meet,or causes the effect to be counteracted or seperates them to less close distance. It depends on the relative positions of the binary vortices and their spatial association with the environmental flow.