摘要
大气海洋问题数值计算的重要特征之一是需要作长时间的数值积分，因此在方程差分离散化后如何保持原问题的物理特性成为一个很关键的问题。从传统的“半拉格朗日法”和显式完全能量守恒差分法中吸取“营养”。
One of important features in the numerical modelling of motions of atmosphere or ocean consists in the long period prediction.A key point in such simulations is to maintain the intrinsic physical features of the original problem and to preveant the distortion due to the accumulation of numerical errors.This paper takes into account the traditional Semi Lagrangian integration scheme.A scheme is constructed so as to keep the conservation of total energy and enlarge the time step to one decade times.Besides it is an explicit scheme,it avoids complex matrices.Several preliminary numerical tests show good perspective of this scheme.
出处
《计算物理》
CSCD
北大核心
1996年第4期403-409,共7页
Chinese Journal of Computational Physics
基金
国家攀登计划项目
国家自然科学基金
关键词
半拉格朗日算法
总能量守恒
地球流体力学
Semi Lagrangian integration scheme
conservation of total energy
unconditional stability
explicit difference scheme.
