有关大气湍流的几个问题

SOME PROBLEMS ON ATMOSPHERIC TURBULENCE

中文摘要:

      浑沌(chaos)概念的提出,有关大气湍流的若干问题有深入讨论的必要。根据我们近几年研究对如下问题提出自己见解,供深入讨论:确定的动力系统可以描述大气湍流,大气湍流可以用有限维动力系统来研究,速度切变∂u/∂z有两重性,稳定层结下可以出现湍流,Lorenz方程的意义及局限性,湍流发生的临界Richardson数,大气湍流是无序吗?白天和晚上大气湍流发生的过程不同。

英文摘要:

      Since the concept of chaos was put forward, some problems of atmospheric turbulence should be further investigated. In this paper, author's opinions on following problems are put forward: (1) the atmospheric turbulence can be described by deterministic dynamical system, (2) the atmospheric turbulence can be investigated in terms of finite dimension dynamical system, (3) the velocity shear ∂u/∂z have dual charawer, (4) turbulenec can occur in stable stratified co-ndition, (5) how is the critical Richardson number? (6) the universality and limitation of Lorenz equation, (7) are atmospheric turbulence disorder? (8) the different route to turbulence at daytime and at night.