Transient numerical simulation for solid-liquid flow in a centrifugal pump by DEM-CFD coupling

Huang, Si; Su, Xianghui; Qiu, Guangqi

doi:10.1080/19942060.2015.1048619

Cited by 48 publications

(28 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The wear produced by sand particles directly affects the hydraulic performance and operational life of the pump. In recent years, many investigations into the solid-liquid two-phase flow field in the centrifugal pump have been undertaken [1][2][3][4][5]. Also, researchers have conducted numerous investigations on the erosion wear of centrifugal pumps by means of different numerical and experimental methods [6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Huang

Guo

et al. 2019

Processes

Self Cite

View full text Add to dashboard Cite

By using EDEM–Fluent codes and coupling the continuous fluid medium with a solid particle discrete element, the solid–liquid two-phase flow field in a centrifugal pump was simulated under the same inlet conditions of the particle volume fraction and three flow conditions of 0.7Qd, 1.0Qd and 1.3Qd. By introducing the Archard wear model, the wear was calculated, and the wear law was obtained for the pump flow parts such as the leading edge of the impeller blade, blade tip, blade pressure side, blade suction side, impeller shroud, hub and volute. The results demonstrate that the wear of volute is about 70% of the total wear of pump. The wear in the impeller mainly occurs in the blade leading edge, the junction of the hub and the trailing part of the blade pressure side, and the junction of the shroud and the rear part of the blade suction side. Under lower flow conditions, the wear in the impeller shroud is relatively considerable. As the flow rate increases, the wear in the blade pressure side and the hub increases significantly.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Huang

Guo

et al. 2019

Processes

Self Cite

View full text Add to dashboard Cite

show abstract

“…In general, the fluid inside the pipe is in multiple turbulent states. e common turbulence models used in FLUENT include the standard k-ε [30] model, RNG k-ε model [31], standard k-ω model [32], and SST k-ω model [27].…”

Section: Turbulence Modelmentioning

confidence: 99%

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Fang

Yang

et al. 2019

Complexity

View full text Add to dashboard Cite

Current research was not dedicated to investigate the mechanical behavior of a concrete drainage pipe under multiphysical coupling conditions of overburden pressure, traffic loads, groundwater, and pipe fluids. This study proposes a new numerical solution method for coupled stress, seepage, and flow fields based on a validated finite element model. The model was developed by ABAQUS and FLUENT and then solved simultaneously using the MpCCI (mesh-based parallel-code coupling interface) platform. Results show that the tensile stress at the springline and the radial displacement at the crown (or invert) of the bell under the effect of groundwater alone were reduced by 50.5% and 38.1%, respectively, compared to the effect of traffic load alone. Parametric analyses show that vehicle speed and fluid height have a slight impact on the pipes. The soil cover depth, wheel pressure, and gasket strength are directly proportional to the pipe stress and vertical displacement. Within the scope of their respective changes, the pipe stresses were increased by 34.4%, 36.7%, and 28.5%, and the vertical displacements were increased by 124%, 95.85%, and 87.7%. The bedding and backfill strengths are proportional to the pipe stress and inversely proportional to the vertical displacement. Within the scope of their respective changes, the pipe stresses were increased by 18.2% and 20.0%, and the vertical displacements were decreased by 11.4% and 10.4%. Sensitivity analyses show that soil cover depth has a greatest impact on the pipe, followed by traffic load.

show abstract

“…The volume fraction of solid particle near the passage wall provides an important guideline to locate potential areas of sediment erosion [3]. The concentration contour of solid particle over the vane/blade is shown in Fig.…”

Section: Particle Concentrationmentioning

confidence: 99%

“…Numerical prediction of sediment erosion based on computational fluid dynamics (CFD) is a powerful tool, in which the turbulence modeling plays an important role to determine the motion and dispersion of the solid particle [3]. For most engineering applications, Reynolds-Average Navier-Stokes (RANS) method is preferable because sediment erosion involves in complicated two-phase flow.…”

Section: Introductionmentioning

confidence: 99%

Sediment Erosion Prediction for a Francis Turbine Based on Liquid-Solid Flow Simulation Using Modified PANS

Cando¹,

Huang²,

Valencia³

et al. 2018

World Congress on Mechanical, Chemical, and Material Engineering

View full text Add to dashboard Cite

A challenge in the prediction of the sediment erosion is the proper estimation of the motion and velocity of the solid particles, where Reynolds average Navier-Stokes (RANS) methods show limited resolution to determine the motion of solid phase affected by flow fluctuations. The present study adopts a modified partially averaged-Navier Stokes (PANS) method to analyse the sediment erosion prediction for Francis turbines. Numerical simulations were carried out to obtain liquid-solid two-phase flow information in entire flow passage of a Francis turbine using Eulerian-Lagrangrian approach. The hydraulic performance such as efficiency and discharge of the turbine achieved experimentally, are used to validate the present simulation method. The results show that the modified PANS model can improve the prediction accuracy and the smallest unresolved-to-total ratio of turbulence kinetic energy, fk, decided with the consideration of the difference between local average grid size and smallest grid size shows a slight accuracy improvement. Based on the two-phase flow field, sediment erosion was predicted in stay vane, guide vane and runner using a semi-empirical equation obtained from an erosion experiment of liquid-solid flow. It is noted that higher physical resolution captured by the turbulence model causes a diminution of the sediment erosion predicted. Further, the numerical simulation reveals that sediment erosion in stay vane is lower than guide vane and runner, whereas the highest values of the erosion intensity occurs in the runner. The sediment erosion due to fine solid particles in the turbine is mainly resulted from cutting. However, high sediment erosion due to deformation is also produced at the leading edges of stay vane and guide vane.

show abstract

Transient numerical simulation for solid-liquid flow in a centrifugal pump by DEM-CFD coupling

Cited by 48 publications

References 15 publications

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Study on Wear Properties of the Flow Parts in a Centrifugal Pump Based on EDEM–Fluent Coupling

Mechanical Response and Parametric Sensitivity Analyses of a Drainage Pipe under Multiphysical Coupling Conditions

Sediment Erosion Prediction for a Francis Turbine Based on Liquid-Solid Flow Simulation Using Modified PANS

Contact Info

Product

Resources

About