海-气振子ENSO模型的变分迭代解法  

The Variational Iteration Solving Method of Sea-air Oscillaor for ENSO Model

作　　者：冯茂春[1] 

机构地区：[1]湖州师范学院理学院,浙江湖州313000

出　　处：《中山大学学报（自然科学版）》2005年第B06期152-153,共2页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：浙江省自然科学基金资助项目(102009)

摘　　要：研究了一个厄尔尼诺_南方海涛(ENSO)的时滞振子的模型:dTdt=AT-εT3-BT(t-δ),t∈(0,+∞)。按实际情形,在相关参数较小的情况下,将问题合理转为奇摄动问题,以变分迭代算法求出ENSO模型的摄动近似解,并将结果与精确解作比较,说明其具有较高的精度。The delayed oscillator of Ei Niňo-Southern Oscillation (ENSO) models dTdt=AT-εT^3-BT(t-δ),t∈(0,+∞) is considered. On the actual situation, while the correlative parameters are small enough,the problem is turned to a singularly perturbed problems. Using the method of variational iteration, the approximation of the solution for ENSO models is obtained,and comparing the result with the exact solution, the better precision of the the result is shown.

关 键 词：拉氏乘子 变分迭代算法 ENSO模型 

分 类 号：O175.14[理学—数学]