Numerical flow-field analysis and design optimization of a high-energy first-stage centrifugal pump impeller

2000 ◽  
Vol 3 (1-2) ◽  
pp. 103-108 ◽  
Author(s):  
F.C. Visser ◽  
R.J.H. Dijkers ◽  
J.G.H. op de Woerd
Keyword(s):  
Flow Field ◽  
Design Optimization ◽  
Centrifugal Pump ◽  
High Energy ◽  
Field Analysis ◽  
Pump Impeller ◽  
Analysis And Design ◽  
Flow Field Analysis ◽  
Centrifugal Pump Impeller

Design Optimization of a Centrifugal Pump Impeller using RSM and Design of Volute

2012 ◽  
Vol 15 (3) ◽  
pp. 39-45 ◽  
Author(s):  
Kwon-Bum Pyun ◽  
Joon-Hyung Kim ◽  
Young-Seok Choi ◽  
Joon-Yong Yoon
Keyword(s):  
Design Optimization ◽  
Centrifugal Pump ◽  
Pump Impeller ◽  
Centrifugal Pump Impeller

Flow Field Instability and Rotordynamic Impedances for an Open Impeller Centrifugal Pump in Transient Four-Quadrant Regimes

2020 ◽  
Author(s):  
Md Shujan Ali ◽  
Farzam Mortazavi ◽  
Alan Palazzolo
Keyword(s):  
Flow Field ◽  
Centrifugal Pump ◽  
Turbulence Model ◽  
Flow Direction ◽  
High Energy ◽  
Operating Conditions ◽  
Mesh Deformation ◽  
Pump Impeller ◽  
Transient Regimes ◽  
Dynamic Forces

Abstract The American Petroleum Institute (API) level 2 rotordynamic stability analysis requires determination of possible destabilization forces on a compressor or pump impeller. Dynamic forces in transient regimes are often excluded although a turbomachine impeller may experience transient operation intentionally or accidentally. The centrifugal pump head, flow direction, rotation and torque can be both positive and negative in transient regimes. For example, in a renewable energy application, pump flow direction and rotation are reversed to generate power from the imposed fluid head. The complete characteristics of a centrifugal pump correspond to all four quadrants (4Q) of operation, to encompass all possible operating conditions. It is required to understand centrifugal pump impeller dynamic forces and rotordynamic responses for all 4Q for design, fault diagnostic, instability analysis, upset conditions (such as water hammer, surge etc.) and for reliable operation of high energy density machines. In the open literature, whirling impeller rotordynamic analyses appears only for normal pump operation. Centrifugal pump dynamic forces, rotordynamic impedances and flow instabilities of an open impeller are reported for 4Q operating regimes in this paper. A transient Computational Fluid Dynamics (CFD)-based model is implemented which is applicable to nonaxisymmetric turbomachinery components, such as with a volute and/or vaned diffuser. Whirling motion of the impeller is modeled by imposing mesh deformation at the impeller walls. A phase modulated multi-frequency mesh deformation method is imposed for better numerical efficiency. Reynolds Averaged Navier-Stokes (RANS) equations with the Shear Stress Transport (SST) turbulence model along with a transitional bypass turbulence model are employed for the CFD solution. The results show the underlying flow field instability and stall cells responsible for the impedance shapes. Furthermore, the model is employed for determining the dependence of the outputs on specific speed to extract rotordynamic forces more efficiently. Impeller dynamic forces are found to scale with the size of the impeller for the same eccentricity ratio and the same flow coefficient. Strength of impeller rotating stalls has dependence on whirl frequency ratio.

scholarly journals Investigation on the Flow Field Upstream of a Centrifugal Pump Impeller

2011 ◽  
Vol 4 (1) ◽  
pp. 209-216 ◽  
Author(s):  
Yao Zhang ◽  
Xianwu Luo ◽  
Yunchi Yi ◽  
Baotang Zhuang ◽  
Hongyuan Xu
Keyword(s):  
Flow Field ◽  
Centrifugal Pump ◽  
Pump Impeller ◽  
Centrifugal Pump Impeller

Applications of CFD Technique in the Flow Field Analysis of Road Sweeper

2015 ◽  
Vol 733 ◽  
pp. 583-586
Author(s):  
Yu Hua Xin ◽  
Hao Li ◽  
Jun Jie Wu
Keyword(s):  
Flow Field ◽  
Reference Value ◽  
Field Analysis ◽  
Engineering Practice ◽  
Characteristic Parameters ◽  
Design And Optimization ◽  
Analysis And Design ◽  
The Road ◽  
Computational Fluid Dynamics Cfd ◽  
Flow Field Analysis

Application of computational fluid dynamics (CFD) in the design of the road sweeper is a new and effective method for the feasibility analysis. By using CFD technology to analyze the flow field of the road sweeper airstream system, we can obtain the characteristic parameters before it is manufactured, so that the analysis and design of the airstream system can be carried out simultaneously. Studies have shown that combining with the specific engineering practice, the application of CFD on the flow field simulation has a certain reference value for the design and optimization of the sweeper airstream system.

Surrogate-based design optimization of a centrifugal pump impeller

2021 ◽  
pp. 1-18
Author(s):  
Ashutosh Kumar Jaiswal ◽  
Md. Hamid Siddique ◽  
Akshoy Ranjan Paul ◽  
Abdus Samad
Keyword(s):  
Design Optimization ◽  
Centrifugal Pump ◽  
Pump Impeller ◽  
Centrifugal Pump Impeller

The PIV Measurements on the Flow Fields in an Unshrouded Centrifugal Pump

Volume 1 ◽  
2004 ◽  
Author(s):  
Chao Liu ◽  
Fangping Tang ◽  
Sun Sun ◽  
Li Cheng ◽  
Jiren Zhou
Keyword(s):  
Flow Field ◽  
Centrifugal Pump ◽  
Flow Rate ◽  
Flow Fields ◽  
Pressure Side ◽  
Pump Impeller ◽  
Lower Velocity ◽  
Piv Measurements ◽  
Velocity Zone ◽  
Centrifugal Pump Impeller

PIV was applied to the measurements of flow field in an unshrouded centrifugal pump impeller. Three windows were selected for the measurements. Three operation points of the pump were taken during the measuring. The ratios (Q/QBEP) of the flow rate for measuring are 0.6, 1.0, and 1.4, respectively. The velocity distributions in blade-to-blade passages obtained at different windows give the evidence that the velocity distributions are asymmetric even under the design operation point. A lower velocity zone existed at middle of blade-to-blades passages near the pressure-side of the blade.

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