Optimization of a Centrifugal Pump Used as a Turbine Impeller By Means of an Orthogonal Test Approach

Tian, Peng; Huang, Jun; Shi, Weidong; Zhou, Lian

doi:10.32604/fdmp.2019.05216

Cited by 18 publications

(10 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Yang et al applied precise numerical simulations to predict the best efficiency point (BEP) of a turbine for a centrifugal pump's positive and negative working conditions [8,9]. Bozorgasareh et al then explored pump selection through numerical calculations, designed parameters for components such as impellers and wheel covers, and optimized the impeller model so it produced a higher efficiency and more stable working conditions [10,11]. In addition to the geometric parameters that affect a PAT's operation, external working conditions also significantly impact its efficiency.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Behavior of a Pump as Turbine under Transient Flow Conditions

Huang

et al. 2022

Processes

View full text Add to dashboard Cite

Centrifugal pumps as turbines (PATs) are widely used in chemical engineering for recycling the abundant energy from high-pressure fluid. The operation of PATs is significantly affected by their upstream conditions, which are not steady (i.e., with a constant flow rate) in reality, thus, research on the flow mechanism of PATs under transient conditions should be considered of higher importance. In this study, a numerical model of a PAT was developed by employing the sliding mesh method to describe turbine rotation, and a user-defined function (UDF) for characterizing transient flow conditions. Corresponding experiments were also conducted to provide validation results for the simulation, and the simulation results agreed well with the experimental outcomes. The instantaneous characteristic curves under the current working conditions were obtained for different transient flow rates. The results show that the turbine’s efficiency is significantly affected by transient flow conditions. In particular, a rapid increase (large time derivative) of flow rate results in a large energy dissipation at the turbine outlet, and therefore, the turbine efficiency decreases. In addition, as the flow rate increases, the hydrodynamic force on the impeller, and the pressure fluctuation amplitude in the volute first decrease and then increase, reaching the minimum near the design flow rate. The current study provides a reliable and precise approach for the estimation of hydrodynamic performance of fluid machinery under transient flow conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Behavior of a Pump as Turbine under Transient Flow Conditions

Huang

et al. 2022

Processes

View full text Add to dashboard Cite

show abstract

“…It is shown that the total sound source intensity (TSSI) and total sound pressure level (TSPL) in the impeller, in the region between the inlet to the outlet and along the circumferential extension of the volute, are much higher than those at pump inlet and outlet. In literature [10], four geometrical parameters of the impeller are considered, i.e., the inlet diameter, the inlet width, the blade number, and the blade angle. The optimization is carried out on the basis of a three-level approach relying on an orthogonal test method.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Structural Parameters of a Plastic Centrifugal Pump

Shi¹,

Tang²,

Tan³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

The structural design parameters of a plastic centrifugal pump were calculated and modeled, and flow field simulation analysis of the model was performed using CFD, in the framework of an orthogonal design method (or experiment). The inlet mounting angle β1, outlet mounting angle β2, wrap angle ϕ, and impeller inlet diameter D1 of the pump impeller were the four factors assumed for the application of the orthogonal experiment, using the efficiency and Net Positive Suction Head (NPSH) as evaluation indices. Moreover, taking the maximum efficiency and minimum NPSH of the plastic centrifugal pump as the evaluation factors, the parameters of the pump impeller were re-optimized through the Taguchi algorithm (leading to the following optimal combination: inlet diameter 35 mm, inlet angle 26°, outlet angle 27°, and wrap angle 110°). The minimum NPSH and the maximum efficiency have been found to be 0.957% and 61.5%, respectively.

show abstract

“…The centrifugal pumps are the main fluid transporting devices, which have played an indispensable role in many fields [1][2][3]. With the increasingly stringent environmental requirements, on the basis of high hydraulic performance of centrifugal pumps, the noise performance has received wide attention.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Changing Characteristics of Flow-Induced Noise in a Centrifugal Pump

Li¹,

Sun²,

Wang³

et al. 2021

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

Centrifugal pumps are widely used in engineering for a variety of applications. A known drawback of these devices is the high-level noise generated during operations, which can affect their stability and adversely influence the entire working environment. By combining the Powell vortex sound theory, numerical simulations and experimental measurements, this research explores the trends of variation and the corresponding underlying mechanisms for the flow-induced noise at various locations and under different operating conditions. It is shown that the total sound source intensity (TSSI) and total sound pressure level (TSPL) in the impeller, in the region between the inlet to the outlet and along the circumferential extension of the volute, are much higher than those at pump inlet and outlet. Additionally, under various rotational speeds with the design flow rate (Condition 1), the TSSI and TSPL at pump inlet and outlet are higher than those obtained with the opening of the valve kept unchanged (Condition 2); vice versa when these two parameters are evaluated at various locations in the impeller and the volute under the Condition 2, they exceed the equivalent values obtained for the other Condition 1.

show abstract

Optimization of a Centrifugal Pump Used as a Turbine Impeller By Means of an Orthogonal Test Approach

Cited by 18 publications

References 11 publications

Hydrodynamic Behavior of a Pump as Turbine under Transient Flow Conditions

Hydrodynamic Behavior of a Pump as Turbine under Transient Flow Conditions

Optimization of the Structural Parameters of a Plastic Centrifugal Pump

Investigation on the Changing Characteristics of Flow-Induced Noise in a Centrifugal Pump

Contact Info

Product

Resources

About