通过用余弦微分求积法(CDQM)对空间的离散,用差分法对时间的离散及Crank-Nicolson(C-N)线性化技术构造了求解Kuramoto-Sivashinsky(K-S)方程的数值格式.通过算例以及与相关文献的比较,结果表明:该算法精确度高,适应性强,适合时间较长的非线性演化过程.
A numerical scheme for the Kuramoto-Sivashinsky(K-S)equation is presented by using the cosine-based differential quadrature method for space and difference formula for time and Crank-Nicolson linearized technique.The numerical solutions are compared with relevant literature,and the results show that the present scheme is highly accurate,adaptable and suitable for nonlinear evolution process with longer time.