摘要
运用耗散结构理论分析探讨了河型转化。指出河型转化是在外界条件变化超过某一临界值而发生的突变。河型在转化过程中,既可以从外界获得负熵流,也可以获得正熵流。负熵流促使河流朝有序化方向发展,正熵流促使河流朝无序化方向发展。有序化过程可能产生耗散结构,无序化过程可能产生混沌态。耗散结构与混沌态在河型转化过程中交替出现,就可能会形成不同的河型。
The theory of dissipative structure is used to analyze the change of river patterns. This change is a break when the outside condition exceeds a threshold value. A river can obtain both negative entropy and positive entropy in evolution. Negative entropy makes a river evolved towards ordering. Positive entropy forces a river evolving towards disordering. The dissipative structure may form in the course of ordering. The chaotic state may form in the course of disordering. When the dissipative structure and the chaotic state form alternately, the river may develop in different patterns.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2004年第3期316-320,共5页
Chinese Journal of Hydrodynamics
关键词
耗散结构
混沌
突变
河型转化
负熵流
正熵流
dissipative structure
chaotic state
break
change of river patterns
