Volume 4, Issue 1 (March 2006)
IJCE 2006, 4(1): 34-41 |
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Saghafian B, Shokoohi A. A Corrected Time-Area Technique for One-dimensional Flow. IJCE 2006; 4 (1) :34-41
URL: http://ijce.iust.ac.ir/article-1-354-en.html
URL: http://ijce.iust.ac.ir/article-1-354-en.html
Abstract: (9793 Views)
Time–Area method is one of the most widely applied techniques of watershed routing, and
can be potentially used as a distributed model. In this paper, a fundamental flaw in the arrangement
of subareas in the original time-area histogram is identified for one-dimensional flow. This is
conducted on the basis of comparing time-area hydrograph with that of the kinematic wave theorem.
Accordingly, a revised time-area algorithm is developed as a substitute for the original time-area.
It is proved that in the revised approach, subareas must be reversely arranged. It is also shown that
the revised time-area hydrograph is in perfect agreement with the hydrograph derived by the
kinematics wave theory.
Type of Study: Research Paper |
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