DETERMINATION OF MANNING ROUGHNESS COEFFICIENT FOR BORDER IRRIGATION SYSTEM
نویسندگان
چکیده
منابع مشابه
evaluation of evalue model to estimate the manning roughness coefficient in furrow irrigation
the manning roughness coefficient is an important parameter in the design and evaluation of furrow irrigation. despite its importance, estimation of this parameter for surface irrigation is very difficult, particularly in furrow irrigation. in this study, an evalue model was used to estimate the manning roughness coefficient in furrow irrigation. the model was based on volume balance and develo...
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An intelligent method based on adaptive neuro-fuzzy inference system (ANFIS) for identifying Manning’s roughness coefficients in modeling of alluvial river is presented. The procedure for selecting values of Manning n is subjective and requires judgment and skill which are developed primarily through experience. During practical applications, researchers often find that a correct choice of the ...
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Characterized by moderate and almost unchanging microbial growth, stability is an essential aspect ofcompost quality Low growth rates give benign organisms a competitive advantage over pathogens such as Sulnronellu and &fhrurn, which thnve m high-growth-rate conditions (Inbar et al., 1990). Also, stability prevents nutrients from becommg tied up in rapid microbial growth, allowing them to be av...
متن کاملstatistical analysis of manning's roughness coefficients in non-vegetated canals for irrigation and drainage network of moghan
introduction: due to sensitiveness of flow to roughness coefficient (rc), selection of this coefficient is important in earth canals designing purposes. precision selection of this coefficient is necessary for design and operation of earthen canals purposes. overestimation of the actual amount of this coefficient will cause an underestimation for flow velocity. accordingly, sedimentation in the...
متن کاملinvestigation on the effect of the seasonal changing of manning roughness coefficient in forecasting flood hydraulic behavior (case study:haraz river)
there are different methods for controling the flood damages which one of them is flood zoning. in this method, flood zones are determined by simulating river hydraulic behavior and its flood plain for different return periods.in other hand, soil and specially plant coverage are the most effective factor to determine manning roughness coefficient. so it is expected, seasonal plant coverage chan...
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ژورنال
عنوان ژورنال: Misr Journal of Agricultural Engineering
سال: 2011
ISSN: 2636-3062
DOI: 10.21608/mjae.2011.105095