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SAGHAFIAN B., SHOKOUHI A.R.. A CORRECTED TIME-AREA TECHNIQUE FOR ONE-DIMENSIONAL FLOW. IJCE
URL: http://ijce.iust.ac.ir/article-1-46-en.html
A CORRECTED TIME-AREA TECHNIQUE FOR ONE-DIMENSIONAL FLOW
SAGHAFIAN B. , SHOKOUHI A.R.
Abstract:   (426 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.
Keywords: TIME, AREA, KINEMATIC WAVE, ONE, DIMENSIONAL FLOW, ISOCHRONE
     
Type of Study: Research Paper |
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