科研之友
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摘要
The dispersion of fluid elements distributed nonuniformly at the interface of a two-dimensional, temporally evolving mixing layer was studied. The average transverse dispersion of fluid elements was found to be either enhanced or reduced markedly by simply varying the initial number density distribution along the interface. The increase in dispersion is due to the nonuniform stretching of the interface during the growth of the vortical structure. This naturally leads to a conclusion that the dispersion rate of particles in a spatially evolving mixing layer can be controlled by injecting particles nonuniformly in time.
- 出版日期1992-8
