Jonathan Andres Graciano Uribe

Scopus Publications

Multiple regression modelling of bed expansion and backwashing pressure drop in pressurised porous media filters for microirrigation and comparison with semi-analytical models
Jonathan Graciano-Uribe, Toni Pujol, Aniol Castells, Miquel Duran-Ros, Gerard Arbat, et al.
Irrigation Science, 2026
Although the expansion of the fluidised bed is a key parameter for defining the optimal working condition of a pressurised porous media filter for microirrigation operating in backwashing mode, there are no ready to use tools available at the user level to calculate it. Complex machine learning models have previously been applied to predict the height of the expanded bed, but simpler methods are required to promote the practical use of bed expansion calculations. Therefore, the capabilities of simpler and easier to both implement and generalise multiple linear regression (MLR) models to forecast both the height of the fluidised bed and the backwashing filter pressure drop were investigated, with input variables being the porous medium type, the initial packed bed height, the underdrain design, and the superficial velocity. In addition, semi-analytical equations and a simplified computational fluid dynamics (CFD) model for calculating the expanded bed height as a function of porous medium properties were tested. The exponential model provided the best fit ( $$\\:{R}^{2}\\:$$ = 0.971) for the pressure drop, while the power model the best fit ( $$\\:{R}^{2}$$ = 0.954) for the bed expansion. A simple semi-analytical expression reproduced the observed trend, but less efficiently than the MLR models. In terms of energy consumption, the results highlighted the relevance of improving the underdrain design, as well as avoiding operation at the point of maximum hydrodynamic shear stress, despite being the optimum condition for particle removal. Bed expansion values of 30–40% represented a reasonable compromise between power consumption and shear stress level.
Hydraulic performance analysis of new versus commercial nozzle design for pressurised porous media filters
Jonathan Graciano-Uribe, Toni Pujol, Miquel Duran-Ros, Gerard Arbat, Francisco Ramirez de Cartagena, et al.
Irrigation Science, 2025
Rapid water filtration with pressurised porous media filters is extensively applied in drip irrigation systems. In double-chamber filters, the underdrains are fixed to the base of the inner plate to sustain the media above while draining water. Here, a new underdrain design intended to reduce the filter energy consumption is presented. The main difference with commercial underdrain units corresponds to the distribution of the slots, being in a horizontal plate to uniformise the flow trajectories inside the porous media. Both commercial and new underdrain designs have been tested in laboratory in both filtration and backwashing modes with three media types, two media heights, and superficial velocities ranging from 20 to 120 m h−1. In filtration mode, results indicate that the new design reduces the filter pressure drop by 31% at 60 m h−1 in comparison with the commercial one. The exploration with an analytical model that correctly reproduces the filter pressure drop, reveals that its value at 60 m h−1 is only 15% higher than the ideal scenario (uniform flow throughout the porous media bed). In backwashing mode, the pressure drop in comparison with the commercial design is reduced by 65% at 80 m h−1, while having the same trend for the bed expansion, which is also predicted by a simple analytical expression. Thus, the new underdrain design produces a more homogeneous fluidised regime than the commercial one at low-moderate superficial velocities.
Optimised random forest for predicting bed expansion and pressure drop in media filter backwashing
P.J. García–Nieto, E. García–Gonzalo, J. Graciano–Uribe, G. Arbat, M. Duran–Ros, et al.
Biosystems Engineering, 2025
Prediction of the bed expansion and pressure drop in microirrigation media filter backwashing using artificial neural networks and comparison with other machine learning techniques
Paulino José García-Nieto, Esperanza García-Gonzalo, Jonathan Graciano-Uribe, Gerard Arbat, Miquel Duran-Ros, et al.
Smart Agricultural Technology, 2025
Impact of Filtration Cycle Patterns on Both Water and Energy Footprints in Drip Irrigation Systems
Toni Pujol, Aniol Castells, Miquel Duran-Ros, Jonathan Graciano-Uribe, Gerard Arbat, et al.
Water Switzerland, 2025
Drip irrigation is a widely spreading technology, mainly due to its high water-use efficiency. This technique requires a filtration process that exhibits cyclical behavior where both filtration and backwashing modes repeat. In filtration, pressure increases with time due to the particle retention up to a preset value. In backwashing, the flow is reversed to clean the filter. Different design strategies to reduce energy and water consumption have been proposed, but their practical effects are not yet clear. Here, a global analysis method based on the classification of the time evolution of the pressure curve in filtration mode was developed. Energy and water use efficiency indices were defined and evaluated under different scenarios. More design options can be undertaken to reduce the consumption of energy than of water. The decrease in the pressure drop for clean filter conditions arose as the best option to increase energy efficiency (in a realistic scenario, a reduction of 20% in the pressure drop with tap water resulted in a reduction of 7.6% in the energy consumption per volume of filtered water). Precise backwashing times and flow rates were essential to improve water use efficiency (e.g., doubling the backwashing time led to a 4.5% decrease in water use efficiency).
Effects of porous media type and nozzle design on the backwashing regime of pressurised porous media filters
Jonathan Graciano-Uribe, Toni Pujol, Miquel Duran-Ros, Gerard Arbat, Francisco Ramírez de Cartagena, et al.
Biosystems Engineering, 2024
Efficiency of Backwashing in Removing Solids from Sand Media Filters for Drip Irrigation Systems
Miquel Duran-Ros, Joan Pujol, Toni Pujol, Sílvia Cufí, Jonathan Graciano-Uribe, et al.
Agriculture Switzerland, 2024
Sand media filters are especially recommended to prevent emitter clogging with loaded irrigation waters, but their performances rely on backwashing. Despite backwashing being a basic procedure needed to restore the initial filtration capacity, there is a lack of information about the solid removal efficiency along the media bed depth. An experimental filter with a 200 mm silica sand bed height was used to assess the effect of two operation velocities (30/45 and 60/75 (filtration/backwashing) m h−1) and two clogging particles (inorganic sand dust and organic from a reclaimed effluent) on the efficiency of backwashing for removing the total suspended solids retained in different media bed slices. The average solid removal backwashing efficiency was greater with organic particles (78%) than with inorganic ones (64%), reaching its maximum at a 5–15 mm bed depth. A higher operation velocity increased the solid removal efficiency by 16%, using organic particles, but no significant differences were observed with inorganic particles. The removal efficiencies across the media bed were more uniform with organic particles (63–89%) than with inorganic (40–85%), which makes it not advisable to reduce the media height when reclaimed effluents are used. This study may contribute to future improvements in sand media filter design and management.
Influence of Leading and Trailing Edge Angle on Impeller Blades of a Pump as Turbine
Diego Penagos-Vasquez, Jonathan Graciano-Uribe, Luis Grisales-Noreña, Sebastián Vélez García, Edward Andrés Torres-López
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2023
A pump as turbine (PAT) is a turbomachine that converts hydraulic energy into electricity. One of the study topics in PAT is the efficiency due to centrifugal pumps are not designed to operate in reverse mode. Geometric variations of the impeller have been studied in the literature. However, it was not possible to evidence the influence of the inclination of the blade leading and trailing edge. Therefore, the objective of this work is to analyze numerically and fluid dynamically the inclination angle of the blade leading and trailing edge of a centrifugal pump, in pump and turbine mode. First, the characteristic curve was validated. Then, the inclination of the leading and the trailing edge was modified, in a range of 25° to 90°, obtaining head, efficiency, and power graph. As a result, in pump mode was evidenced that an angle close to 90° on the blade trailing edge provides a higher efficiency of 50.26% and decreases until 40.77% when the angle approaches 30°, reducing the head to around 20%, while power remained constant. In turbine mode, an inverse effect was obtained, where the maximum efficiency was 60.9% and the generated power increased up to 4.76 kW in the blade leading edge. Therefore, the angular variation of the leading and the trailing edge is adequate in turbine mode, while in pump mode there is a loss of capacity.
Bed expansion at backwashing in pressurised porous media filters for drip irrigation: Numerical simulations and analytical equations
Jonathan Graciano-Uribe, Toni Pujol, Diego Hincapie-Zuluaga, Jaume Puig-Bargués, Miquel Duran-Ros, et al.
Biosystems Engineering, 2022
Author Correction: Microstructural Features of Dissimilar Thin Sheets Aging Aluminum Alloy – Low Carbon Steel Joined by Friction Stir Welding (Metallography, Microstructure, and Analysis, (2022), 11, 4, (617-633), 10.1007/s13632-022-00879-2)
Edwar Andrés Torres López, Jonathan Andrés Graciano-Uribe, Igor Jordão Marques, Tiago Felipe de Abreu Santos
Metallography Microstructure and Analysis, 2022
Microstructural Features of Dissimilar Thin Sheets Aging Aluminum Alloy – Low Carbon Steel Joined by Friction Stir Welding
Edwar Andrés Torres López, Jonathan Andrés Graciano-Uribe, Igor Jordão Marques, Tiago Felipe de Abreu Santos
Metallography Microstructure and Analysis, 2022
Characterization of a Commercial Axial Flow PAT Through a Structured Methodology Step-by-Step
Diego Penagos-Vásquez, Jonathan Graciano-Uribe, Edward Torres
Cfd Letters, 2022
Effect of the opening and location ratio on the performance of an H-Darrieus VAWT
Andres Felipe Burbano-Hernández, Diego Andres Hincapié Zuluaga, Jonathan Andrés Graciano-Uribe, Edwar Andrés Torres Lopéz
Revista Facultad De Ingenieria, 2022
Correction of Errors during the Manufacture by Computer Numerical Control (CNC) of Blades for an Axial Hydrokinetic Turbine
J. Graciano-Uribe, J. Arbeláez, D. Hincapie, E. Chica, E. Torres, et al.
International Journal of Integrated Engineering, 2022
Assessment of different pressure drop-flow rate equations in a pressurized porous media filter for irrigation systems
Jonathan Graciano-Uribe, Toni Pujol, Jaume Puig-Bargués, Miquel Duran-Ros, Gerard Arbat, et al.
Water Switzerland, 2021
Numerical Simulation of a Propeller-Type Turbine for In-Pipe Installation
Oscar Darío Monsalve Cifuentes, Jonathan Graciano Uribe, Diego Andrés Hincapié Zuluaga
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2021
Control of steel detachment and metal flow on aluminum-steel friction stir welding of thin joints
E. Torres, J. Graciano-Uribe, T. Santos
International Journal of Engineering Transactions A Basics, 2021
Dynamic analysis of mechanical systems using image processing
Juan D. Pérez, Diego A. Hincapié, Jonathan A. Graciano
International Journal of Mechanics, 2021
Instabilities and influence of geometric parameters on the efficiency of a pump operated as a turbine for micro hydro power generation: A review
Jonathan Graciano-Uribe, Jorge Sierra, Edwar Torres-Lopez
Journal of Sustainable Development of Energy Water and Environment Systems, 2021
Characteristic Curve Prediction of a Commercial Centrifugal Pump Operating as a Turbine Through Numerical Simulations
Diego Penagos Vásquez, Jonathan Graciano Uribe, Sebastián Vélez García, Jorge Sierra del Rio
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2021
Segregation effect on solidification cracking in spot welding of the 6xxx aluminum
Andrés Ramírez, J. Graciano-Uribe, Diego Hincapie Zuluga, Edwar Torrez Lopez
Engineering Transactions, 2020
Weldability of aluminum-steel joints using continuous drive friction welding process, without the presence of intermetallic compounds
Oscar David Hincapié, Jhonathan Alfonso Salazar, José Julian Restrepo, Jonathan Andrés Graciano-Uribe, Edwar Andrés Torres
Engineering Journal, 2020
Control of formation of intermetallic compound in dissimilar joints aluminum-steel
O. D. Hincapié, J. A. Salazar, J. Restrepo, E. Torres, J. Graciano-Uribe
International Journal of Engineering Transactions A Basics, 2019

RECENT SCHOLAR PUBLICATIONS

Multiple regression modelling of bed expansion and backwashing pressure drop in pressurised porous media filters for microirrigation and comparison with semi-analytical models
J Graciano-Uribe, T Pujol, A Castells, M Duran-Ros, G Arbat, ...
Irrigation Science 44 (4), 84 , 2026
2026
Hydraulic performance analysis of new versus commercial nozzle design for pressurised porous media filters
J Graciano-Uribe, T Pujol, M Duran-Ros, G Arbat, FR de Cartagena, ...
Irrigation Science 43 (6), 1273-1290 , 2025
2025
Citations: 3
Optimised random forest for predicting bed expansion and pressure drop in media filter backwashing
PJ García–Nieto, E García–Gonzalo, J Graciano–Uribe, G Arbat, ...
Biosystems Engineering 256, 104189 , 2025
2025
Citations: 8
Prediction of the bed expansion and pressure drop in microirrigation media filter backwashing using artificial neural networks and comparison with other machine learning techniques
PJ García-Nieto, E García-Gonzalo, J Graciano-Uribe, G Arbat, ...
Smart Agricultural Technology 11, 100900 , 2025
2025
Citations: 4
Impact of Filtration Cycle Patterns on Both Water and Energy Footprints in Drip Irrigation Systems
T Pujol, A Castells, M Duran-Ros, J Graciano-Uribe, G Arbat, ...
Water 17 (10), 1440 , 2025
2025
Citations: 1
Impact of filtration cycle patterns on both water and energy footprints in drip irrigation systems
T Pujol i Sagaró, A Castells Coll, M Duran i Ros, J Graciano-Uribe, ...
2025
Effects of porous media type and nozzle design on the backwashing regime of pressurised porous media filters
J Graciano-Uribe, T Pujol, M Duran-Ros, G Arbat, FR de Cartagena, ...
Biosystems Engineering 247, 77-90 , 2024
2024
Citations: 9
SOLID REMOVAL ACROSS PRESSURIZED SAND MEDIA FILTERS FOR DRIP IRRIGATION WHEN USING RECLAIMED EFFLUENTS
M Duran-Ros, J Pujol, T Pujol, S Cufí, J Graciano-Uribe, G Arbat, ...
REUSE EUROMED 2024 , 2024
2024
Efficiency of backwashing in removing solids from sand media filters for drip irrigation systems
M Duran-Ros, J Pujol, T Pujol, S Cufí, J Graciano-Uribe, G Arbat, ...
Agriculture 14 (9), 1570 , 2024
2024
Citations: 9
VII Conference of Pre-doctoral Researchers Abstract Book: Volume VII, 2023
G Boto Varela, A Piñel
Universitat de Girona. Escola de Doctorat , 2023
2023
Caracterización de filtros granulares en retrolavado con arena de sílice y microesferas de vidrio
JG Uribe, T Pujol, MD Ros, DAH Zuluaga, GA Pujolràs, S Cufí, ...
XII Congreso ibérico de agroingeniería.: Libro de actas, 691-698 , 2023
2023
Efecto del contralavado en la retención de sólidos a lo largo del medio filtrante en filtros de arena
MD Ros, J Pujol, T Pujol, JG Uribe, S Cufí, GA Pujolràs, ...
XII Congreso ibérico de agroingeniería.: Libro de actas, 683-690 , 2023
2023
Bed expansion at backwashing in pressurised porous media filters for drip irrigation: Numerical simulations and analytical equations
J Graciano-Uribe, T Pujol, D Hincapie-Zuluaga, J Puig-Bargués, ...
Biosystems Engineering 223, 277-294 , 2022
2022
Citations: 14
Author Correction: Microstructural Features of Dissimilar Thin Sheets Aging Aluminum Alloy–Low Carbon Steel Joined by Friction Stir Welding
EA Torres López, JA Graciano-Uribe, IJ Marques, TF de Abreu Santos
Metallography, Microstructure, and Analysis 11 (5), 817-817 , 2022
2022
Microstructural features of dissimilar thin sheets aging aluminum alloy–low carbon steel joined by friction stir welding
EA Torres López, JA Graciano-Uribe, IJ Marques, TF de Abreu Santos
Metallography, Microstructure, and Analysis 11 (4), 617-633 , 2022
2022
Citations: 3
Correction of Errors during the Manufacture by Computer Numerical Control (CNC) of Blades for an Axial Hydrokinetic Turbine
JAG Uribe, J Arbeláez, D Hincapie, E Chica, E Torres
International Journal of Integrated Engineering 14 (1), 13-24 , 2022
2022
Effect of the opening and location ratio on the performance of an H-Darrieus VAWT
EA Torres López, AF Burbano Hernández, DA Hincapié Zuluaga, ...
Universidad de Antioquia, Facultad de Ingeniería , 2022
2022
Characterization of a Commercial Axial Flow PAT Through a Structured Methodology Step-by-Step
D Penagos-Vásquez, J Graciano-Uribe, E Torres
CFD Lett 14, 1-19 , 2022
2022
Citations: 3
Instabilities and influence of geometric parameters on the efficiency of a pump operated as a turbine for micro hydro power generation: A review
J Graciano-Uribe, J Sierra, E Torres-López
Journal of Sustainable Development of Energy, Water and Environment Systems … , 2021
2021
Citations: 13
Numerical Simulation of a Propeller-Type Turbine for In-Pipe Installation
OD Monsalve-Cifuentes, J Graciano-Uribe, DAH Zuluaga
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 83 (1 … , 2021
2021
Citations: 13

MOST CITED SCHOLAR PUBLICATIONS

Assessment of Different Pressure Drop-Flow Rate Equations in a Pressurized Porous Media Filter for Irrigation Systems
J Graciano-Uribe, T Pujol, J Puig-Bargués, M Duran-Ros, G Arbat, ...
Water 13 (16), 2179 , 2021
2021
Citations: 27
Weldability of Aluminum-Steel Joints Using Continuous Drive Friction Welding Process, Without the Presence of Intermetallic Compounds
EAT Oscar D. Hincapié, Jhonathan A. Salazar, José J. Restrepo, Jonathan A ...
Engineering Journal 24 (1), 129-144 , 2020
2020
Citations: 17
Bed expansion at backwashing in pressurised porous media filters for drip irrigation: Numerical simulations and analytical equations
J Graciano-Uribe, T Pujol, D Hincapie-Zuluaga, J Puig-Bargués, ...
Biosystems Engineering 223, 277-294 , 2022
2022
Citations: 14
Instabilities and influence of geometric parameters on the efficiency of a pump operated as a turbine for micro hydro power generation: A review
J Graciano-Uribe, J Sierra, E Torres-López
Journal of Sustainable Development of Energy, Water and Environment Systems … , 2021
2021
Citations: 13
Numerical Simulation of a Propeller-Type Turbine for In-Pipe Installation
OD Monsalve-Cifuentes, J Graciano-Uribe, DAH Zuluaga
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 83 (1 … , 2021
2021
Citations: 13
Control of Formation of Intermetallic Compound in Dissimilar Joints Aluminum-steel
JGU O. D. Hincapiéa, J. A. Salazara, J. J. Restrepoa, E. A. Torres
International Journal of Engineering TRANSACTIONS A: Basics 32 (1), 127-136 , 2019
2019
Citations: 12
Characteristic curve prediction of a commercial centrifugal pump operating as a turbine through numerical simulations
D Penagos-Vásquez, J Graciano-Uribe, SV García, JS del Rio
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 83 (1 … , 2021
2021
Citations: 10
Comparative Analysis between a Discrete Spiral Chamber and a Continuous Spiral Chamber via ANSYS
CAS Rios, J Graciano-Uribe, SV García, DAH Zuluaga
Tecciencia 12 (23), 29-38 , 2017
2017
Citations: 10
Effects of porous media type and nozzle design on the backwashing regime of pressurised porous media filters
J Graciano-Uribe, T Pujol, M Duran-Ros, G Arbat, FR de Cartagena, ...
Biosystems Engineering 247, 77-90 , 2024
2024
Citations: 9
Efficiency of backwashing in removing solids from sand media filters for drip irrigation systems
M Duran-Ros, J Pujol, T Pujol, S Cufí, J Graciano-Uribe, G Arbat, ...
Agriculture 14 (9), 1570 , 2024
2024
Citations: 9
Optimised random forest for predicting bed expansion and pressure drop in media filter backwashing
PJ García–Nieto, E García–Gonzalo, J Graciano–Uribe, G Arbat, ...
Biosystems Engineering 256, 104189 , 2025
2025
Citations: 8
Segregation effect on solidification cracking in spot welding of the 6XXX aluminum
A Ramirez, J Graciano-Uribe, DH ZULUGA, ET LOPEZ
Engineering Transactions 68 (4), 417-431 , 2020
2020
Citations: 5
Prediction of the bed expansion and pressure drop in microirrigation media filter backwashing using artificial neural networks and comparison with other machine learning techniques
PJ García-Nieto, E García-Gonzalo, J Graciano-Uribe, G Arbat, ...
Smart Agricultural Technology 11, 100900 , 2025
2025
Citations: 4
Control of steel detachment and metal flow on aluminum-steel friction stir welding of thin joints
EA Torres, UJ Graciano, TFA Santos
International Journal of Engineering 34 (4), 1024-1034 , 2021
2021
Citations: 4
Hydraulic performance analysis of new versus commercial nozzle design for pressurised porous media filters
J Graciano-Uribe, T Pujol, M Duran-Ros, G Arbat, FR de Cartagena, ...
Irrigation Science 43 (6), 1273-1290 , 2025
2025
Citations: 3
Microstructural features of dissimilar thin sheets aging aluminum alloy–low carbon steel joined by friction stir welding
EA Torres López, JA Graciano-Uribe, IJ Marques, TF de Abreu Santos
Metallography, Microstructure, and Analysis 11 (4), 617-633 , 2022
2022
Citations: 3
Characterization of a Commercial Axial Flow PAT Through a Structured Methodology Step-by-Step
D Penagos-Vásquez, J Graciano-Uribe, E Torres
CFD Lett 14, 1-19 , 2022
2022
Citations: 3
Effect of the opening and location ratio on the performance of an H-Darrieus VAWT
AF Burbano-Hernández, DAH Zuluaga, JA Graciano-Uribe, EAT Lopéz
Revista Facultad de Ingeniería Universidad de Antioquia , 2021
2021
Citations: 2
Impact of Filtration Cycle Patterns on Both Water and Energy Footprints in Drip Irrigation Systems
T Pujol, A Castells, M Duran-Ros, J Graciano-Uribe, G Arbat, ...
Water 17 (10), 1440 , 2025
2025
Citations: 1
Inspección Visual Automática de un proceso flexográfico usando visión artificial para corregir la desalineación de las planchas de impresión
D Giraldo, J Graciano-Uribe, C Madrigal, J Londoño
Revista CINTEX 21 (1), 23-34 , 2016
2016
Citations: 1

Jonathan Andres Graciano Uribe

RESEARCH INTERESTS

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

MOST CITED SCHOLAR PUBLICATIONS