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Numerical Investigation of Pressure Fluctuation in Centrifugal Pump Volute Based on SAS Model and Experimental Validation

This paper presents an investigation of pressure fluctuation of a single-suction volute-type centrifugal pump, particularly volute casing, by using numerical and experimental methods. A new type of hybrid Reynolds-averaged Navier-Stokes/Large Eddy Simulation, referred to as the shear stress transpor... Full description

Journal Title: Advances in Mechanical Engineering 2014-12-01, 2014卷 (Issue 2014), pp.379-390
Main Author: Qiao-Rui Si
Other Authors: Jian-Ping Yuan , Shou-Qi Yuan , Wen-Jie Wang , Lei Zhu , Gérard Bois
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 20151123 ; DOI: 10.1155/2014/972081 ; ISSN: 1687-8132 ; ISSN: 20151123
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recordid: airitilibP20151123004-201412-201512010004-201512010004-379-390
title: Numerical Investigation of Pressure Fluctuation in Centrifugal Pump Volute Based on SAS Model and Experimental Validation
format: Article
creator:
  • Qiao-Rui Si
  • Jian-Ping Yuan
  • Shou-Qi Yuan
  • Wen-Jie Wang
  • Lei Zhu
  • Gérard Bois
subjects:
  • Druckschwankung
  • Spiralgehäuse
  • Statistische Analyse
  • Zentrifugalpumpe
  • Large-Eddy-Simulation
  • Instationäre Strömung
  • Intensitätsverteilung
  • Druckmessung
  • Numerische Simulation
  • Pumpengehäuse
  • Flügelrad
  • Prüfstand
  • Drucksensor
  • Strömungsfeld
  • Antriebsstrangkomponente
  • Drehbewegung
ispartof: Advances in Mechanical Engineering, 2014-12-01, 2014卷 (Issue 2014), pp.379-390
description: This paper presents an investigation of pressure fluctuation of a single-suction volute-type centrifugal pump, particularly volute casing, by using numerical and experimental methods. A new type of hybrid Reynolds-averaged Navier-Stokes/Large Eddy Simulation, referred to as the shear stress transport-scale-adaptive simulation (SAS) model, is employed to study the unsteady flow. Statistical analysis method is adopted to show the pressure fluctuation intensity distribution in the volute channel. A test rig for pressure pulsation measurement is built to validate the numerical simulation results using eight transient pressure sensors in the middle section of the volute wall. Results show that the SAS model can accurately predict the inner flow field of centrifugal pumps. Radial force acting on the impeller presents a star distribution related to the blade number. Pressure fluctuation intensity is strongest near the tongue and shows irregular distribution in the pump casing. Pressure fluctuation is distributed symmetrically at the cross-section of the volute casing because the volute can eliminate the rotational movement of the liquid discharged from the impeller. Blade passing frequency and its multiples indicate the dominant frequency of the monitoring points within the volute, and the low-frequency pulsation, particularly in the shaft component, increases when it operates at off-design condition, particularly with a small flow rate. The reason is that the vortex wave is enhanced at the off-design condition, which has an effect on the axle and is presented in the shaft component in the frequency domain.
language: eng
source:
identifier: ISSN: 20151123 ; DOI: 10.1155/2014/972081 ; ISSN: 1687-8132 ; ISSN: 20151123
fulltext: fulltext
issn:
  • 16878132
  • 20151123
  • 1687-8132
  • 2015-1123
url: Link


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descriptionThis paper presents an investigation of pressure fluctuation of a single-suction volute-type centrifugal pump, particularly volute casing, by using numerical and experimental methods. A new type of hybrid Reynolds-averaged Navier-Stokes/Large Eddy Simulation, referred to as the shear stress transport-scale-adaptive simulation (SAS) model, is employed to study the unsteady flow. Statistical analysis method is adopted to show the pressure fluctuation intensity distribution in the volute channel. A test rig for pressure pulsation measurement is built to validate the numerical simulation results using eight transient pressure sensors in the middle section of the volute wall. Results show that the SAS model can accurately predict the inner flow field of centrifugal pumps. Radial force acting on the impeller presents a star distribution related to the blade number. Pressure fluctuation intensity is strongest near the tongue and shows irregular distribution in the pump casing. Pressure fluctuation is distributed symmetrically at the cross-section of the volute casing because the volute can eliminate the rotational movement of the liquid discharged from the impeller. Blade passing frequency and its multiples indicate the dominant frequency of the monitoring points within the volute, and the low-frequency pulsation, particularly in the shaft component, increases when it operates at off-design condition, particularly with a small flow rate. The reason is that the vortex wave is enhanced at the off-design condition, which has an effect on the axle and is presented in the shaft component in the frequency domain.
subjectDruckschwankung ; Spiralgehäuse ; Statistische Analyse ; Zentrifugalpumpe ; Large-Eddy-Simulation ; Instationäre Strömung ; Intensitätsverteilung ; Druckmessung ; Numerische Simulation ; Pumpengehäuse ; Flügelrad ; Prüfstand ; Drucksensor ; Strömungsfeld ; Antriebsstrangkomponente ; Drehbewegung;
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