NUMERICAL STUDY FOR EDDIES SELF-ORGANIZATION IN CONVECTION BOUNDARY LAYER
对流边界层大涡自组织过程的数值研究

Based on a simplified dry boundary layer convection model and the nonlinear ther-modynamic theorem, the dynamical and thermodynamical characteristics for forming, develop-ing and decaying boundary layer eddies are studied. As a result, large eddies in the convection boundary layer are always in an unsteady manner. Eddies merge and broken process existed si-multaneously during the evolution of convection boundary layer, the former corresponds to local entropy-decreasing, but the latter is accompanied with total entropy increasing. Eddies developing process can be viewed as the competition between two factors of total entropy increasing and local entropy-decreasing in the convection boundary layer.