High-speed stereoscopic PIV study of rotating instabilities in a radial vaneless diffuser

被引:63
作者
Dazin, A. [1 ]
Cavazzini, G. [2 ]
Pavesi, G. [2 ]
Dupont, P. [3 ]
Coudert, S. [4 ]
Ardizzon, G. [2 ]
Caignaert, G. [1 ]
Bois, G. [1 ]
机构
[1] Arts & Metiers ParisTech, CNRS, LML Lab, UMR 8107, F-59046 Lille, France
[2] Univ Padua, Dept Mech Engn, Padua, Italy
[3] Univ Lille Nord France, CNRS, Ecole Cent Lille, LML Lab,UMR 8107, F-59000 Lille, France
[4] CNRS, LML Lab, UMR 8107, F-59650 Villeneuve Dascq, France
关键词
ROTOR-STATOR INTERACTION; CENTRIFUGAL PUMP IMPELLER; UNSTEADY-FLOW; PRESSURE-FLUCTUATIONS; CIRCUMFERENTIAL DISTORTION; STALL; VELOCIMETRY; FREQUENCY; VIBRATION; DESIGN;
D O I
10.1007/s00348-010-1030-x
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper presents an experimental analysis of the unsteady phenomena developing in a vaneless diffuser of a radial flow pump. Partial flow operating conditions were investigated using 2D/3C high repetition rate PIV, coupled with unsteady pressure transducers. Pressure measurements were acquired on the shroud wall of the vaneless diffuser and on the suction pipe of the pump, whereas PIV flow fields were determined on three different heights in the hub to shroud direction, inside the diffuser. The classical Fourier analysis was applied to both pressure signals to identify the spectral characteristics of the developing instabilities, and the high-order spectral analysis was exploited to investigate possible non-linear interaction mechanisms between different unsteady structures. A dedicated PIV averaging procedure was developed and applied to the PIV flow fields so as to capture and visualize the topology of the spectrally identified phenomena. The influence of these phenomena on the diffuser efficiency was also investigated.
引用
收藏
页码:83 / 93
页数:11
相关论文
共 53 条
[1]  
Abdelhamid A N, 1983, CAN AERONAUT SPACE J, V26, P259
[2]  
AKHRAS A., 2004, INT J ROTATING MACH, V10, P309, DOI DOI 10.1155/S1023621X04000326
[3]   ACTIVELY CONTROLLED RADIAL FLOW PUMPING SYSTEM - MANIPULATION OF SPECTRAL CONTENT OF WAKES AND WAKE-BLADE INTERACTIONS [J].
AKIN, O ;
ROCKWELL, D .
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1994, 116 (03) :528-537
[4]  
[Anonymous], 2003, INT J ROTATING MACH, DOI DOI 10.1155/S1023621X03000265
[5]   EXPERIMENTAL INVESTIGATION OF ROTOR-STATOR INTERACTION IN A CENTRIFUGAL PUMP WITH SEVERAL VANED DIFFUSERS [J].
ARNDT, N ;
ACOSTA, AJ ;
BRENNEN, CE ;
CAUGHEY, TK .
JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 1990, 112 (01) :98-108
[6]  
Arndt N., 1989, J. Turbomach., V111, P213, DOI [DOI 10.1115/1.3262258, 10.1115/1.3262258]
[7]  
Carnevale EA, 2006, Proceedings of the ASME Turbo Expo 2006, Vol 6, Pts A and B, P1105
[8]   Analysis of the Rotor-Stator Interaction in a Radial Flow Pump [J].
Cavazzini, G. ;
Pavesi, G. ;
Ardizzon, G. ;
Dupont, P. ;
Coudert, S. ;
Caignaert, G. ;
Bois, G. .
HOUILLE BLANCHE-REVUE INTERNATIONALE DE L EAU, 2009, (05) :141-151
[9]  
Cellai A., 2003, TURBO EXPO 2003 A B, V6, P711
[10]  
CELLAI A, 2003, P ASME TURB EXP ATL, V6, P721, DOI DOI 10.1115/GT2003-38394