KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지

Evaluating Coefficient of Transverse Dispersion Induced by Shear Flow

전단류에 의한 횡분산계수의 산정

Baek, Kyong-Oh;Seo, Il-Won
백경오;서일원

  • Published : 20070100

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Abstract

A mathematical approach on the two-dimensional dispersion induced by the shear flow was reviewed, and previous works for evaluating dispersion coefficients by theoretical methods were summarized. Based on the review, new equation, which can be widely used, for the transverse dispersion coefficient was developed. The new equation was verified with tracer data sets which had been obtained from laboratory experiments conducted in unlike meandering channels. The results of verification showed that the new equation agreed better with the observed transverse dispersion coefficient than previous works because it considered appropriately effects of the shear flow. Moreover, the equation had high applicability to natural rivers due to its simple form resulting from a linear profile of the shear flow. Although it was not validated in natural streams owing to lack of field data, the equation had little differences compared with existing empirical equations derived from field data.

Keywords

References

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