Comparison between Hazen-Williams and Darcy-Weisbach equations to calculate head loss through conveyancing treated wastewater in Kerbala city, Iraq

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.251385

Keywords:

Hazen-Williams equation, Darcy-Weisbach equation, WaterCAD V8i, head loss, correlation coefficient

Abstract

Reuse of wastewater has been widespread in this era to support the water sustainability process. Therefore, treated wastewater should be conveyed to suitable places and adopted for different uses. This study presents an empirical relationship between the Darcy-Weisbach and Hazen-Williams equations for four types of pipe material (ductile iron, GRP, concrete, and plastic) by using WaterCAD Version 8i. Two hydraulic models were developed to estimate the head loss in pipes by using different diameters: first, using pipe diameters from 800 mm to 1,200 mm for a flow rate of 1.16 m3/s, second, adopting pipe diameter from 1,600 mm to 2,000 mm for a flow rate of 4.63 m3/s. The study results are the head loss values obtained from the Darcy-Weisbach and Hazen-Williams equations, which were used to correlate them using IBM SPSS Statistics. The correlation coefficient between both equations turned out to be 0.991, 0.990, 0.990, and 0.990 for ductile iron, GRP, concrete, and plastic pipe materials. Additionally, the relationship between head loss and pipe diameter is negatively proportioned for both equations. Also, both head loss equation results are the same. The head loss values in the Darcy’s equation were higher for ductile iron and GRP materials, while being lower for concrete and plastic materials for both models. Selecting concrete or plastic pipes to convey treated wastewater is better than other pipe materials. Another conclusion is that the pipe diameter affects the head loss magnitude irrespective of the kind of equation whether Darcy-Weisbach or Hazen-William equation. Finally, this relationship is very useful for designers in converting the head loss values obtained using these equations.

Supporting Agency

  • This work was carried out at Moscow State University of Civil Engineering.

Author Biographies

Layth Saeed Abdulameer, Moscow State University of Civil Engineering; University of Kerbala

PhD Student, Assistant Lecture

Department of Hydraulics and Hydraulic Engineering

Department of Petroleum Engineering

Nazira Dzhumagulova, Moscow State University of Civil Engineering; Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Associate Professor

Department of Hydraulics and Hydraulic Engineering

Hayder Algretawee, University of Kerbala

Doctor of Water Resources Engineering, Lecturer

Department of Civil Engineering

Larisa Zhuravleva, Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Associate Professor

Department of Organization and Technology of Construction of Environmental Facilities

Musa Habib Alshammari, University of Kerbala

Professor of Water Resources Engineering

Department of Civil Engineering

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Published

2022-01-24

How to Cite

Abdulameer, L. S., Dzhumagulova, N. ., Algretawee, H., Zhuravleva, L., & Alshammari, M. H. (2022). Comparison between Hazen-Williams and Darcy-Weisbach equations to calculate head loss through conveyancing treated wastewater in Kerbala city, Iraq. Eastern-European Journal of Enterprise Technologies, 1(1 (115), 36–43. https://doi.org/10.15587/1729-4061.2022.251385

Issue

Vol. 1 No. 1 (115) (2022): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2022 Layth Saeed Abdulameer, Nazira Dzhumagulova, Hayder Algretawee, Larisa Zhuravleva, Musa Habib Alshammari

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