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Depth averaged and moment equations for moderately shallow free surface flow

 

作者: Peter M. Steffler,   Jin Yee-Chung,  

 

期刊: Journal of Hydraulic Research  (Taylor Available online 1993)
卷期: Volume 31, issue 1  

页码: 5-17

 

ISSN:0022-1686

 

年代: 1993

 

DOI:10.1080/00221689309498856

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The classical depth averaged St. Venant equations for shallow free surface flow are extended to treat problems with nonhydroslatic pressure and nonuniform velocity distributions. The equations required to solve for the additional degrees of freedom are derived by a moment weighted residual method from the fundamental Reynolds equations. The new equations are derived in detail in one horizontal dimension and evaluated for the basic problems of uniform flow and small amplitude waves. With further study and application, these new equations may offer a means for obtaining greater detail over a wider range of problems than is presently practical.

 

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