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Paper Information

Journal:   AGRICULTURAL RESEARCH   FALL 2006 , Volume 6 , Number 3; Page(s) 1 To 16.
 
Paper: 

AN EXPLICIT SCHEME OF ZERO-INERTIA MODEL EQUATIONS WITH EFFECTIVENESS OF WETTED PERIMETER FOR FURROW IRRIGATION SIMULATION

 
 
Author(s):  AMINIZADEH S.M.R., LIAGHAT A.A.M., MAHMOUDIAN SHOUSHTARI M., KOUCHAKZADEH S.
 
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Abstract: 

A zero-inertia model was developed for furrow irrigation simulation with constant spatial intervals and effectiveness of wetted perimeter (Zero-Inertia Model, Wetted Perimeter Variable; ZIWPV model) using an explicit scheme. The code of the computer program remains simple and its teaching and learning will be easy, if the explicit scheme is used. The wetted perimeter is assumed as a function of flow section area. However, the depletion phase has not been simulated by previous models in which explicit schemes have been used, it has been simulated in this model. The model result was validated against the experimental field data and the spatial intervals size was investigated on simulation of advance phase of ZIWPV model. The advance phase was also simulated well with large spatial intervals. Applying the small sizes of spatial intervals make the results get closer to actual data. However, the model may behave unstable on advance phase. Also, it was found that the final results of model are not sensitive to time and space interval sizes. Therefore, the solution of zero-inertia models with explicit schemes can be used well to simulate furrow irrigation.

 
Keyword(s): FURROW IRRIGATION, ZERO-INERTIA MODEL, WETTED PERIMETER, EXPLICIT SCHEME, DEPLETION PHASE
 
References: 
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