Numerical investigation of influence of inlet guide vanes on unsteady flow in a centrifugal pump

Wang, Yuchuan; Tan, Lei; Zhu, Baoshan; Cao, Shuai; Wang, Binbin

doi:10.1177/0954406215570105

Cited by 36 publications

(11 citation statements)

References 28 publications

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“…The steady calculation results were the initial condition for the unsteady calculation. The time step Dt = 2.2447 3 10 24 s, which is said to be accurate; [19][20][21] all 180 steps are in one rotating circle, calculating 15 circles in total, which is said to be accurate. 22 …”

Section: Computational Methods and Setupmentioning

confidence: 99%

Effects of staggered blades on the hydraulic characteristics of a 1400-MW canned nuclear coolant pump

Zhou

Wang

2016

Advances in Mechanical Engineering

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A canned nuclear coolant pump is used in an advanced third-generation pressurized water reactor. Impeller is a key component of a canned nuclear coolant pump. Usually, the blade is installed between the hub and the shroud as an entire part. The blade is divided into two parts and is staggered in the circumferential direction is an approach of blade design. To understand the effects of staggered blades on a canned nuclear coolant pump, this article numerically investigated different types of staggering. The validity of the numerical simulation was confirmed by comparing the numerical and experimental results. The performance change of a canned nuclear coolant pump with staggered blades was acquired. Hydraulic performance curves, axial force curves, static pressure distributions at the impeller outlet, and static pressure pulsations were performed to investigate the performance changes caused by the staggered blades. The results show that the staggered blade has an important influence on the performance of canned nuclear coolant pumps. A staggered blade does not improve hydraulic performance but does improve the axial force and pressure pulsation. Specifically, the staggered blades can significantly reduce the pressure pulsation amplitude on the impeller pass frequency.

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Section: Computational Methods and Setupmentioning

confidence: 99%

Effects of staggered blades on the hydraulic characteristics of a 1400-MW canned nuclear coolant pump

Zhou

Wang

2016

Advances in Mechanical Engineering

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“…Tan et al [7] studied the effect of an adjustable inlet guide vane for the pre-swirl regulation of a single-stage centrifugal pump and obtained a higher efficiency and head at the design point at an angle of 24 • . Yuchuan et al [8] studied the same IGV for angles ±36 • and ±60 • to find the influence of guide vanes on unsteady flow. Qu et al [9] studied the clocking effect of the same IGV and found little influence on pump performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of an Inducer-Type Guide Vane on Hydraulic Losses at the Inter-Stage Flow Passage of a Multistage Centrifugal Pump

Shamsuddeen

Kim

et al. 2021

Processes

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A multistage centrifugal pump was developed for high head and high flow rate applications. A double-suction impeller and a twin-volute were installed at the first stage followed by an impeller, diffuser and return vanes for the next four stages. An initial design feasibility study was conducted using three-dimensional computational fluid dynamics tools to study the performance and the hydraulic losses associated with the design. Substantial losses in head and efficiency were observed at the interface between the first stage volute and the second stage impeller. An inducer-type guide vane (ITGV) was installed at this location to mitigate the losses by reducing the circumferential velocity of the fluid exiting the volute. The ITGV regulated the pre-swirl of the fluid entering the second stage impeller. The pump with and without ITGV is compared at the design flow rate. The pump with ITGV increased the stage head by 63.28% and stage efficiency by 47.17% at the second stage. As a result, the overall performance of the pump increased by 5.78% and 3.94% in head and efficiency, respectively, at the design point. The ITGV has a significant impact on decreasing losses at both design and off-design conditions. An in-depth flow dynamic analysis at the inducer-impeller interface is also presented.

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“…Early experimental and computational fluid dynamics (CFD) studies 4,6 showed that introducing preswirl increases the efficiency at lower mass flow rates and improves the surge limit. More recent studies have applied CFD simulations to investigate features such as performance, 7,8 unsteady interactions between the IGVs and the impellers, 9,10 pressure fluctuations at large IGV angles, 11 and the effect of IGV geometry. 1,12 A review of preswirl in from IGVs can be found in the work of Liu et al 13 Both experimental [14][15][16] and numerical 3,9,[17][18][19][20][21][22] approaches have been used to study compressor flow, with and without IGVs.…”

Section: Introductionmentioning

confidence: 99%

A 1D mean line model for centrifugal compressors with variable inlet guide vanes

Dewar

Creamer²,

Dotcheva

et al. 2019

Engineering Reports

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This paper considers a 1D in‐line analytical model for centrifugal compressors with variable inlet guide vanes. A theoretical 1D model is developed to predict the effect of varying the inlet guide vane angle at different rotational speeds. An iterative algorithm is presented, which provides a fast and efficient method for evaluating the performance of the compressor under different operating conditions. The results from the analytical 1D model are presented and compared to full 3D CFD (computational fluid dynamics) simulations. The simulations validate the assumptions used in the 1D model and show good agreement between the two approaches over a range of vane angles. Qualitatively, both demonstrate the same trends as the vane angle and rotational velocities are varied. Quantitatively, the pressure ratio was found to agree within 8% and the temperature gain to within 15%. The 1D model was then modified to introduce a 5% loss in the diffuser and this was found to improve the 1D model predictions, with the pressure within 2% of the CFD value.

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Numerical investigation of influence of inlet guide vanes on unsteady flow in a centrifugal pump

Cited by 36 publications

References 28 publications

Effects of staggered blades on the hydraulic characteristics of a 1400-MW canned nuclear coolant pump

Effects of staggered blades on the hydraulic characteristics of a 1400-MW canned nuclear coolant pump

Effect of an Inducer-Type Guide Vane on Hydraulic Losses at the Inter-Stage Flow Passage of a Multistage Centrifugal Pump

A 1D mean line model for centrifugal compressors with variable inlet guide vanes

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