Open AccessA Dimensionless Solution of Lag Time for Diverging Surface
Author(s) -
Necati Ağıralioğlu
Publication year - 1987
Publication title -
hydrology research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 48
eISSN - 2224-7955
pISSN - 1998-9563
DOI - 10.2166/nh.1987.0005
Subject(s) - dimensionless quantity , lag , divergence (linguistics) , time lag , lag time , plane (geometry) , surface (topology) , kinematics , mechanics , mathematics , degree (music) , mathematical analysis , geometry , physics , classical mechanics , computer science , biological system , philosophy , biology , acoustics , linguistics , computer network
Using the kinematic wave theory, a dimensionless expression is obtained, and solved numerically in order to estimate the lag time for diverging surfaces. The findings show that the dimensionless lag time, which is the ratio of lag time for diverging surface to that of plane surface, ranges from 1 to 0.5 depending on the degree of divergence and friction formula used. The results can be used easily and reliably for all ranges of the geometric parameter for urban and rural catchments.
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