Heat and Mass Transfer, Год журнала: 2019, Номер 55(8), С. 2277 - 2288
Опубликована: Фев. 6, 2019
Язык: Английский
Renewable Energy, Год журнала: 2018, Номер 127, С. 368 - 376
Опубликована: Апрель 24, 2018
Язык: Английский
Процитировано
213
Energies, Год журнала: 2018, Номер 11(5), С. 1048 - 1048
Опубликована: Апрель 25, 2018
The hydraulic design method of controllable blade angle for rotodynamic multiphase pump with impeller and diffuser is proposed. distribution along the meridional streamline governed by normalized fourth-order first-order polynomial function diffuser, respectively. orthogonal optimization five factors four levels employed numerical simulation to optimize geometry parameters, including shroud at leading trailing edge βIs0, βIs1, difference inlet ∆βI0, coefficients hub kh, ks. According analysis, influence each factor on pressure rise estimated, values those parameters are determined. increased 12.8 kPa in comparison base pump. Results show that distributions gas volume fraction (GVF) become more uniform after optimization, which improves transporting performance
Язык: Английский
Процитировано
73
International Communications in Heat and Mass Transfer, Год журнала: 2020, Номер 118, С. 104898 - 104898
Опубликована: Окт. 4, 2020
Язык: Английский
Процитировано
63
Physics of Fluids, Год журнала: 2025, Номер 37(2)
Опубликована: Фев. 1, 2025
To enhance the performance of a solid–liquid two-phase annular jet pump, efficiency and energy consumption are selected as objective functions. Using design experiments method, area ratio, nozzle length, diffuser angle identified variables. Optimal Latin hypercube sampling is employed to generate samples, multi-objective optimization performed using particle swarm optimization-back propagation neural network combined with non-dominated sorting genetic algorithm II. The results indicate that established model demonstrates good fitting generalization capabilities, achieving expected predictive outcomes. After structural optimization, overall length reduced. In terms performance, increases 3.1%, reduces 34.3%. distribution low-pressure zones within pump reduced, resulting in smoother pressure changes. entropy generation region extends along flow direction outlet, but rate decreases, significantly reducing losses main channel. total number collisions improving wear characteristics internal walls.
Язык: Английский
Процитировано
1
Renewable Energy, Год журнала: 2018, Номер 127, С. 386 - 397
Опубликована: Апрель 24, 2018
Язык: Английский
Процитировано
57
Energies, Год журнала: 2019, Номер 12(3), С. 461 - 461
Опубликована: Янв. 31, 2019
In oil and gas exploitation, the multiphase pump is a vital piece of equipment to guarantee production with high efficiency stable operation. The complicated pattern flow in affects performance; for this reason, performance inner should be sufficiently investigated. present work, liquid-gas designed manufactured, then tested specialized test rig reveal transient pressure characteristics pump. Results show that dominant frequency under water water-air conditions blade passing frequency, which induced by rotor stator interaction. downstream impeller, fluctuation obviously weakened, because splitter-blade design could improve control ability region. comparison condition, condition greatly increases, multiples impeller rotating are stimulated due movement merging air bubbles. Finally, correlation phase distribution revealed using high-speed camera. With gradual rise from inlet outlet, relative separation two phases induce violent fluctuations.
Язык: Английский
Процитировано
53
Science Progress, Год журнала: 2019, Номер 103(1)
Опубликована: Окт. 20, 2019
To study the effects of performance different types impeller on vortex pump, orthogonal test design, which is carried out by combining experimental and numerical calculation, adopted to optimize type design structure for in pump. find folding blade angle, position point whole blade, whether wedge an scheme with three factors two levels designed. A simulation conducted each analyzing curve plan optimal program data obtain primary secondary orders impact angle blades blades, shape blades. The results show that optical combination R30F60, at 2/3 does not adopt radial wedge. 36% higher than value rated flow head, efficiency 18.75% value, high-efficiency zone pump wider, meets requirements. Through cycle can be shortened effectively, level improved, hydraulic model superior obtained.
Язык: Английский
Процитировано
42
Processes, Год журнала: 2019, Номер 7(5), С. 246 - 246
Опубликована: Апрель 27, 2019
Double-suction centrifugal pumps are widely used in industrial and agricultural applications since their flow rate is twice that of single-suction with the same impeller diameter. They usually run for longer, which makes them susceptible to cavitation, putting downstream components at risk. A fast approach predicting Net Positive Suction Head required was applied perform a multi-objective optimization on double-suction pump. An L32 (84) orthogonal array designed evaluate 8 geometrical parameters 4 levels each. two-layer feedforward neural network genetic algorithm solve problem into pareto solutions. The results were validated by numerical simulation compared original design. suction performance improved 7.26%, 3.9%, 4.5% 3.8% conditions 0.6Qd, 0.8Qd, 1.0Qd 1.2Qd respectively. efficiency increased 1.53% 1.1% 0.8Qd. streamline blade surface vapor volume fraction optimized much smaller than impeller. This study established cavitation parametric database both hub shroud angles double pump
Язык: Английский
Процитировано
40
Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy, Год журнала: 2019, Номер 233(6), С. 715 - 726
Опубликована: Янв. 16, 2019
The ultra-low specific speed centrifugal pump has been widely applied in aerospace engineering, metallurgy, and other industrial fields. However, its hydraulic design lacks specialized theory method. Moreover, the impeller volute are designed separately without considering their coupling effect. Therefore, optimal is proposed this study based on local entropy production theory. Four geometrical parameters selected to establish orthogonal schemes including blade outlet setting angle, wrapping angle inlet width, throat area. Subsequently, a 3D steady flow with Reynolds stress turbulent model energy equation numerically conducted calculated by user-defined function code. range analysis made identify scheme indicating that combination of feasible optimization. visibly improved an increase 1.08% efficiency. Entropy decreased 16.75% 6.03% volute, respectively. High loss areas captured explained terms helical vortex wall friction, respectively reduced 3.82% 14.34% for total pump.
Язык: Английский
Процитировано
36
Engineering Optimization, Год журнала: 2021, Номер 54(8), С. 1395 - 1412
Опубликована: Июль 5, 2021
The input power to a centrifugal pump is optimized by changing the impeller blade exit angle. In optimization, angles of three meridional profile layers are selected as design variables, while shaft and head developed multi-objective optimization functions obtained through surrogate model. A genetic algorithm used find optimum point. Computational fluid dynamics simulations performed solve Reynolds-averaged Navier–Stokes equations using shear-stress transport turbulence model for closure term. Manipulation angle affects both efficiency without affecting at best point, corresponding mass flow rate 1.75 kg/s. point shows an enhancement (>10%) in efficiency. Improved separation near trailing edge uniform loading decreases required impeller.
Язык: Английский
Процитировано
29