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The problem of energy conservation in one-way models

 

作者: Michael B. Porter,   Finn B. Jensen,   Carlo M. Ferla,  

 

期刊: The Journal of the Acoustical Society of America  （AIP Available online 1991）
卷期: Volume 89, issue 3  

页码: 1058-1067

 

ISSN:0001-4966

 

年代: 1991

 

DOI:10.1121/1.400525

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

It is shown that the standard stair-step representation of a sloping bottom may result in significant prediction errors. In fact, current parabolic equation implementations arenotenergy conserving. The problem is shown to derive from the approximate treatment of the interface conditions at vertical boundaries along the stair steps. Several improved interface conditions are proposed.

 

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