摘要
本文将变分原理与常规解法相结合,提出了一种只含边界未知参数的对称列式方法,在保留常规边界解法自由度数目少特点的基础上,又使得最终离散方程的系数矩阵成为对称矩阵,进一步提高了内存利用率和计算效率。算例结果验证了该方法在求解容器内液体晃动问題上的可靠性。
By combining the variational theory and the regular boundary method,the author proposes a symmetric formulation which consists only of the boundary unknowns.While retaining the advantage of requiring a lesser degree of freedom as with the conventional boundary method,this formula- tion ensures that the final algebraic equations have a symmetric coefficient matrix,which can further augment the utilization factor of the core memory and raise the computational efficiency.Numerous examples of calculating the swaying frequencies of the tanked liquid attest the reliability of the proposed method. frequency of sloshing liquid;;bounary solution;;symmetric formulation
出处
《中国民航学院学报》
1990年第2期12-16,共5页
Journal of Civil Aviation University of China
