TY  - EJOU
AU  - Peng, Zhengqiang 
AU  - Feng, Rendong 
AU  - Han, Fang 
AU  - Guo, Jing 
AU  - Chi, Shen 
AU  - Huang, Wenao 
AU  - Luo, Jie 

TI  - Jet Pump Structural Optimization through CFD Analysis and Experimental Validation
T2  - Fluid Dynamics \& Materials Processing

PY  - 2025
VL  - 21
IS  - 12
SN  - 1555-2578

AB  - Jet pumps often suffer from efficiency losses due to the intense mixing of power and suction fluids, which leads to significant kinetic energy dissipation. Enhancing the efficiency of such pumps requires careful optimization of their structural parameters. In this study, a computational fluid dynamics (CFD) model of a hydraulic jet sand-flushing pump is developed to investigate the effects of throat-to-nozzle distance, area ratio, and throat length on the pump’s sand-carrying performance. An orthogonal experimental design is employed to optimize the structural parameters, while the influence of sand characteristics on pumping performance is systematically evaluated. Complementary indoor experiments are used to validate the numerical results, yielding an optimized configuration with a throat-to-nozzle cross-sectional area ratio of 4, a throat length five times the throat diameter, and a throat-to-nozzle distance equal to the nozzle diameter. Under a power fluid flow rate of 1.7 m<sup>3</sup>/h with this area ratio, the sand-carrying efficiency reaches its peak, achieving a sand transport rate of 290 g/min (6.7 L/h). Comparison of CFD predictions with experimental data across different area ratios demonstrates excellent agreement, with an average relative error of 2.44% and an average absolute error of 3.56%, confirming the reliability of the simulation approach.
KW  - Jet pump; sand-carrying; CFD; nozzle; throat

DO  - 10.32604/fdmp.2025.073281