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ISSN : 1026-3098
e-ISSN : 2345-3605
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Publication Information : Volume 23 - Number 3 - Successive Number 3
Type : Research Note
Topics of Paper : Transaction on Civil Engineering
English Title : Bed Load Sediment Transport in Sewers at Limit of Deposition
English Abstract : Sedimentation is a problematic issue concerningsewer system design. In order to reducesediment deposition in sewersystems, two new equationsarepresented with asmoothing function and Group Method of Data Handling (GMDH) to estimateminimum flowvelocity. For this purpose, dimensional analysis is used to determine the factors affecting sediment transport at limit of deposition. These factors are categorized in five different groups: transport, transport mode, flow resistance, sediment and motion. Six different models are presented for predicting the densimetric Froude number (Fr) using the smoothing function and GMDH. Themodels presented withthese two methods are compared with existing equations. The results indicate that the equations proposedusing thesmoothingfunction (MAPE= 5.05, RMSE= 0.24 & AIC= -43.04) and GMDH (MAPE= 5.39, RMSE= 0.3 & AIC= 72.78) are more accurate than existing models. Furthermore, sensitivity analysis is performed to examine the efficacy of each of the dimensionless parameters presented by the best model in estimating Fr
English Keywords : Bed load, Group Method of Data Handling (GMDH), Limit of deposition, Sediment transport, Sensitivity analysis, Sewer
Refrences :
Number Of Pages :
From 907 to 917


Authors :
The AuthorAuthor SequenceOrganizationOrganization ( english )AffiliationEmailEducation
Isa Ebtehaj 1Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran  isa.ebtehaj@yahoo.com 
Dr. Hossein Bonakdari
(Author)
2Department of Civil Engineering, Razi University, Kermanshah, Iran Associate Professorbonakdari@yahoo.com 
Published Issues
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Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Industrial Engineering
2016
2015
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology
2014
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology
2013
Transactions on Civil Engineering
Transactions on Mechanical Engineering
Transactions on Chemistry and Chemical Engineering
Transactions on Computer Science & Engineering and Electrical Engineering
Transactions on Industrial Engineering
Transactions on Nanotechnology

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