Characteristic Analysis of Exponential Compact Higher Order Schemes for Convection-Diffusion Equations

• 作者: Nachiketa Mishra Y.V.S.S. Sanyasiraju
• 来源期刊: 美国计算数学期刊(英文)
• 学科: 数学
• 关键词: EXPONENTIAL SCHEME COMPACT HIGHER Order SCHEME Characteristics Resolving Efficiency Finite Difference
• 年，卷（期）: 2011,（2）
• 页码范围: 39-54
• 页数: 16页
• 分类号: O1

摘要

This paper looks at the development of a class of Exponential Compact Higher Order (ECHO) schemes and attempts to comprehend their behaviour by introducing different combinations of discrete source function and its derivatives. The characteristic analysis is performed for one-dimensional schemes to understand the efficiency of the scheme and a similar analysis has been introduced for higher dimensional schemes. Finally, the developed schemes are used to solve several example problems and compared the error norms and rates of convergence.