Effect of the tip clearance on tip leakage vortex and pressure fluctuation characteristics in a helico-axial flow multiphase pump
Source abstract
Abstract
Tip clearance inevitably exists in helico-axial flow multiphase pumps, which generates a great impact on flow characteristics. To select a reasonable tip clearance and improve the transporting efficiency, different tip clearances (Rtc = 0.5, 1.0, and 1.5 mm) are chosen to investigate the flow behaviors and hydraulic characteristics. Based on the shear stress transport k-ω turbulence model, the unsteady Reynolds averaged Navier–Stokes equations are applied to solve the unsteady flow. Results show that when the tip clearance increases, the tip leakage vortex (TLV) near the tip gradually becomes obvious and the pressure fluctuation near the TLV also becomes larger. The spatial–temporal evolution is divided into three stages: split stage, contraction stage, and recurrence stage. Besides, the rotor–stator interaction is still the primary cause for the pressure fluctuation.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Cavitation Phenomena in Pumps · Hydraulic and Pneumatic Systems · Oil and Gas Production Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University , Chengdu 610039, China and , Chengdu 610039, China
Key Laboratory of Fluid Machinery and Engineering (Xihua University), Sichuan Province , Chengdu 610039, China and , Chengdu 610039, China
Funding
The Central Leading Place Scientific and Technological Development Funds for Surface Project · Open Research Fund Program of State Key Laboratory of Hydroscience and Engineering · The National Key Research and Development Program · The Key Scientific Research Fund of Xihua University of China
References (29)
Show source-provided references
1. Multi objective optimization of a multiphase pump for offshore plants
2. Improvement of hydrodynamic performance of a multiphase pump using design of experiment techniques10.1115/1.4029890 ↗
3. Multi-objective optimization of the hydrodynamic performance of the second stage of a multi-phase pump10.3390/en10091334 ↗
4. Development of numerical Eulerian-Eulerian models for simulating multiphase pumps10.1016/j.petrol.2017.10.073 ↗
5. Comparison of multiphase pumping technologies for subsea and downhole applications
6. Multi-objective shape optimization of helico-axial multiphase pump impeller based on NSGA-II and ANN10.1016/j.enconman.2010.07.029 ↗
7. Experimental investigation of the flow at the entrance of a rotodynamic multiphase pump by visualization10.1016/j.petrol.2014.12.017 ↗
8. Experiment and numerical study of a new generation three-stage multiphase pump10.1016/j.petrol.2018.06.011 ↗
9. Energy performance and flow characteristics of a multiphase pump with different tip clearance sizes10.1177/1687814018823356 ↗
10. Numerical analysis of pressure fluctuation in a multiphase rotodynamic pump with air–water two-phase flow10.2516/ogst/2018101 ↗
11. Influence of tip clearance on pressure fluctuations in an axial flow pump10.1007/s12206-016-0315-2 ↗
12. Pressure fluctuation and flow pattern of a mixed-flow pump with different blade tip clearances under cavitation condition10.1177/1687814017696227 ↗
13. Energy characteristics of mixed-flow pump under different tip clearances based on entropy production analysis10.1016/j.energy.2020.117447 ↗
14. Diagnosis of internal energy characteristics of mixed-flow pump within stall region based on entropy production analysis model10.1016/j.icheatmasstransfer.2020.104784 ↗
15. Numerical prediction of unsteady pressure field within the whole flow passage of a radial single-blade pump10.1115/1.4007382 ↗
16. Experimental investigation of rotor-stator interaction in a centrifugal pump with several vaned diffusers10.1115/1.2927428 ↗
17. Role of blade rotational angle on energy performance and pressure fluctuations of a mixed-flow pump10.1177/0957650917689948 ↗
18. Numerical study on the characteristics of pressure fluctuations in an axial-flow water pump10.1155/2014/565061 ↗
19. Tip leakage vortex cavitation from the tip clearance of a single hydrofoil10.1299/jsmeb.45.662 ↗
20. Unsteady attached cavitation on an oscillating hydrofoil10.1017/s0022112088002101 ↗
21. Numerical analysis of the groove effect on the tip leakage vortex cavitating flow10.1177/0957650919884192 ↗
22. Method of C groove on vortex suppression and energy performance improvement for a NACA0009 hydrofoil with tip clearance in tidal energy10.1016/j.energy.2018.04.174 ↗
23. Numerical evaluation of the clearance geometries effect on the flow field and performance of a hydrofoil10.1016/j.renene.2016.06.064 ↗
24. Numerical and experimental investigation of tip leakage vortex trajectory and dynamics in an axial flow pump10.1016/j.compfluid.2015.01.010 ↗
25. Three-dimensional flow structures and associated turbulence in the tip region of a waterjet pump rotor blade10.1007/s00348-011-1189-9 ↗
26. Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump10.1007/s00348-010-0975-0 ↗
27. Visualization and time-resolved particle image velocimetry measurements of the flow in the tip region of a subsonic compressor rotor10.1115/1.4028433 ↗
28. Tip clearance on pressure fluctuation intensity and vortex characteristic of a mixed flow pump as turbine at pump mode10.1016/j.renene.2018.06.032 ↗
29. Influence of T-shape tip clearance on performance of a mixed-flow pump10.1177/0957650917733129 ↗