瞬态波的高精度开路边条件  

The High Precision Open Boundary Conditions Designed for Transient Waves

作　　者：邹光远[1] 

机构地区：[1]北京大学力学系

出　　处：《应用数学和力学》1994年第8期699-707,共9页Applied Mathematics and Mechanics

基　　金：国家自然科学基金

摘　　要：文献［２～４］提出了一种用于瞬态波的自适应开路边条件（ＡＯＢＣ）．克服了已有的开路边条件（ＯＢＣ）应用范围狭窄的困难，可以适用于来波入射角在任意范围内变化的情况。本文则是以其中的一阶ＡＯＢＣ为基础，构造了一类新的高阶ＡＯＢＣ。并证明在所有同阶ＯＢＣ中，只有这类ＡＯＢＣ才具有最高阶精度，而所有其之同阶的ＯＢＣ的精度都要比它低。In Refs.[2～4] there is an Adaptive Open Boundary Condition(AOBC)desi-gned for transient waves which overcomes the limitation of the existing Open Boundary Condition(OBC)and can be used for the cases of waves with arbitrary incident angles.In this article a new family of high order AOBC has been desi-gned on the basis of the above mentioned AOBC with the first order.In compa-rison with all other OBC with the same order,this new family of AOBC has the highest precision.

关 键 词：开路边条件 瞬态波 色散波 AOBC 

分 类 号：O352[理学—流体力学]