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The present research depicts an analysis of the implementation of computational fluid dynamics (CFD) in the study of pumps such as turbines and PATs. To highlight the benefits of CFDs for PAT studies, results from both experimental tests have been compared to better understand the reproduction error phenomena. For this, data analysis used in successful models has been applied to determine variables and parameters, and to report a low relative error. The results show that most of the studies focused on fixed speed rotation with some cases of variable speed rotation. Furthermore, there is not enough information in the academic literature for PAT of axial and mixed flows with fixed and variable speed. Finally, turbulence models based on Reynolds average Navier–Stokes (RANS) have been used to simulate PATs with fixed speed rotation in most cases.
Frank Plua; Victor Hidalgo; P. López-Jiménez; Modesto Pérez-Sánchez. Analysis of Applicability of CFD Numerical Studies Applied to Problem When Pump Working as Turbine. Water 2021, 13, 2134 .
AMA StyleFrank Plua, Victor Hidalgo, P. López-Jiménez, Modesto Pérez-Sánchez. Analysis of Applicability of CFD Numerical Studies Applied to Problem When Pump Working as Turbine. Water. 2021; 13 (15):2134.
Chicago/Turabian StyleFrank Plua; Victor Hidalgo; P. López-Jiménez; Modesto Pérez-Sánchez. 2021. "Analysis of Applicability of CFD Numerical Studies Applied to Problem When Pump Working as Turbine." Water 13, no. 15: 2134.
The improvement in energy saving aspects in water systems is currently a topic of major interest. The utilization of pumps working as turbines is a relevant strategy in water distribution networks consisting of pressurized pipes, using these machines to recover energy, generate green energy and reduce leakages in water systems. The need to develop energy studies, prior to the installation of these facilities, requires the use of simulation tools. These tools should be able to define the operation curves of the machine as a function of the flow rate. This research proposes a new strategy to develop a mathematics model for pumps working as turbines (PATs), considering the modified affinity laws. This proposed model, which can be input into hydraulic simulation tools (e.g., Epanet, WaterGems), allows estimation of the head, efficiency, and power curves of the PATs when operating at different rotational speeds. The research used 87 different curves for 15 different machines to develop the new model. This model improves the results of the previously published models, reducing the error in the estimation of the height, efficiency, and power values. The proposed model reduced the errors by between 30 and 50% compared to the rest of the models.
Frank Plua; Francisco-Javier Sánchez-Romero; Victor Hidalgo; P. López-Jiménez; Modesto Pérez-Sánchez. New Expressions to Apply the Variation Operation Strategy in Engineering Tools Using Pumps Working as Turbines. Mathematics 2021, 9, 860 .
AMA StyleFrank Plua, Francisco-Javier Sánchez-Romero, Victor Hidalgo, P. López-Jiménez, Modesto Pérez-Sánchez. New Expressions to Apply the Variation Operation Strategy in Engineering Tools Using Pumps Working as Turbines. Mathematics. 2021; 9 (8):860.
Chicago/Turabian StyleFrank Plua; Francisco-Javier Sánchez-Romero; Victor Hidalgo; P. López-Jiménez; Modesto Pérez-Sánchez. 2021. "New Expressions to Apply the Variation Operation Strategy in Engineering Tools Using Pumps Working as Turbines." Mathematics 9, no. 8: 860.