Geometry Design of a Mixed Flow Pump Using Experimental Results of on Internal Impeller Flow

Varchola, Michal; Hlbocan, Peter

doi:10.1016/j.proeng.2012.07.021

Cited by 10 publications

(4 citation statements)

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“…Mixed-flow pump is a kind of industrial and agricultural pump, which could be widely used in irrigation, mine engineering, power stations and water supply [1][2][3][4]. It can meet the requirements of low head and high flow when operating at different situations.…”

Section: Literature Reviewmentioning

confidence: 99%

Research of transient rotor–stator interaction effect in a mixed-flow pump under part-load conditions

Cao

Wei

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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In order to analyze the unsteady flow characteristic and the pressure fluctuation features of mixed-flow pump caused by the interaction between the impeller and guide vanes under part-load conditions, the unsteady flow field in the mixed-flow pump was numerically simulated based on the standard k-ε turbulence model. The pressure distribution and the velocity distribution in the rotor-stator interaction (RSI) zones were acquired, and the time domain and frequency domain of the pressure fluctuation were emphatically analyzed. The results showed that the velocity within the rotor-stator interaction zones is mainly affected by the relative position of impeller and guide vane. With the decrease in flow rate condition, the flow fields become more violent and more vortexes generate in the RSI zone, which causes much energy losses. With the rotation of impeller, the vortexes generating from RSI zones move into the guide vane and dissipate in the guide vane passage in the end. The pressure pulsations at various monitoring points fluctuate periodically, and there appear four peak and four trough values with the same number of leaves. The dominant frequency of pressure pulsation was approximate to the impeller blade passing frequency (BPF). Within the rotor-stator interaction zones, the pressure pulsation coefficient in the rotor-stator interaction zone of the mixed-flow pump changes most obviously. The BPF and double and triple frequency of the pressure pulsation are dominant frequencies, and the frequency distribution range is relatively concentrated.

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Section: Literature Reviewmentioning

confidence: 99%

Research of transient rotor–stator interaction effect in a mixed-flow pump under part-load conditions

Cao

Wei

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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“…Based on a numerical analysis of a 3D viscous flow, Hyuk et al [14] designed a high-efficiency mixed-flow pump and the results suggested that the hydraulic efficiency of a mixed-flow pump at the design level can be improved by modifying its geometry. The impact of the geometry parameters of the impeller on the hydraulic performance of mixed flow pumps was studied by Varchola et al [15], and several different designs were also compared. Long et al [16] studied how the blade numbers of the impeller and the diffuser influence the reactor coolant pump performances using the numerical simulation method.…”

Section: Introductionmentioning

confidence: 99%

The Influence and Optimization of Geometrical Parameters on Coast-Down Characteristics of Nuclear Reactor Coolant Pumps

Zhao

Wang

et al. 2019

Processes

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Coast-down characteristics are the crucial safety evaluation factors of nuclear reactor coolant pumps. The energy stored at the highest moment of inertia of the reactor coolant pump unit is utilized to maintain a normal coolant supply to the core of the cooling loop system for a short period of time during the coast-down transition. As a result of the high inertia moment of the rotor system, the unit requires a high reliability of the nuclear reactor coolant pump and consumes considerable energy in the start-up and normal operation. This paper considers the operational characteristics of the coast-down transition process based on the existing hydraulic model of the nuclear reactor coolant pump. With the implementation of an orthogonal test, the hydraulic performance of the nuclear reactor coolant pump was optimized, and the optimal combination of impeller geometrical parameters was selected using multivariate linear regression to prolong the coast-down time of the reactor coolant pump and to avoid serious nuclear accidents.

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“…The rst design template for the mixed ow pump was put forth by Wislicensus [1], which was later on modi ed by Myles [2], Stepano [3], Neumann [4], Gahlot and Nyiri [5] who developed and suggested their own design templates for mixed ow pumps. Experimental results were used by Varchola and Hlbocan [6] in the development of design template for a mixed ow pump.…”

Section: Introductionmentioning

confidence: 99%

Design of Mixed Flow Pump Impeller Blade using Mean Stream Line Theory and its Analysis

Zindani

Roy

2018

Scientia Iranica

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Given the importance of blade design in the e ective performance of a mixed ow pump, the present work demonstrates the designing of the mixed ow pump impeller blade using the almost unexplored mean streamline theory. The mean streamline theory, though used sparingly, was found suitable to give comparable results to those of other templates of design. The design process was carried out in AutoCAD 2013 and Solid Works Premium 2014 software. The analysis of equivalent stress, equivalent elastic strain, Total deformation, and the directional deformation was carried out in ANSYS 2014 for di erent construction materials of the blade, i.e., stainless steel, titanium alloy, bronze, and copper alloy. Total deformation was found to be maximum for the impeller blade made from titanium alloy, whereas the equivalent stress and strain was found to be the least for the titanium alloyed impeller blade. Further, a comparison analysis of the equivalent stresses in blade designed was carried out using mean streamline theory and free vortex theory. It was observed that the equivalent stress in impeller blade designed using free vortex theory was lower than that designed using mean streamline theory.

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Geometry Design of a Mixed Flow Pump Using Experimental Results of on Internal Impeller Flow

Cited by 10 publications

References 0 publications

Research of transient rotor–stator interaction effect in a mixed-flow pump under part-load conditions

Research of transient rotor–stator interaction effect in a mixed-flow pump under part-load conditions

The Influence and Optimization of Geometrical Parameters on Coast-Down Characteristics of Nuclear Reactor Coolant Pumps

Design of Mixed Flow Pump Impeller Blade using Mean Stream Line Theory and its Analysis

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