G114 アモルフォス状対流の特徴づけについて

概要

論文の詳細を見る
Time-evolutions of two-dimensional nonlinear evolution equations, which describe the long-wave dynamics of the surface-tension-driven Benard convection with poorly conductive boundary conditions, weakly deformable interface and no effects of buoyancy, are solved numerically. It is found that steady amorphous or disordered convective cells appear from small random initial conditions. Detail structures depend on initial conditions while statistical properties such as the average distance of cells, which is larger than the wavelength of the maximum growth rate, are similar to each other irrespective of initial conditions and system-sizes. Here the distance between the center of cells is defined using the Delaunay tessellation. Using initial perturbations of the steady states, numerical simulations show that they are stable to small random disturbances.
日本流体力学会の論文
2001-07-31