Author(s): Shuguang Li
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Keywords: No Keywords
Abstract: Numerous investigations,starting with Taylor(1953,1954)andcontinuing with,e.g.Elder(1959),Fisher(1967,1968,1973),Sayre(1968),Atesman(1970),Sooky(1969)and Miller etal(1974),etc.,have contributed to a good understanding of the mechanism oflongitudinal dispersion in prismatic open channel flows.The cloudof dispersing material is spread over the channel cross-section byturbulent and convective mass transfer,and at the same timestretched longitudinally due to the variation of velocity withposition in the cross-section. Given the magnitude anddistribution of velocity and turbulent mass transfer coefficientsin a longitudinally uniform flow,existing theory is capable ofpredicting longitudinal concentration and dispersion cofficientswith a high degree of accuracy over the entire span of theprocess.
Year: 1989