Centrifugal pumps are a source of pressure and flow rate perturbations in hydraulic pumping systems. In particular, a significant excitation is usually induced at the blade-passing frequency and harmonics as a consequence of the fluid-dynamic interaction between the rotor and the stator. The magnitude of this excitation is very dependent on the internal geometry of the pump and on its point of operation, but it depends also on the acoustic response to the perturbations of the hydraulic network. The induced and transmitted perturbations can be either amplified or reduced depending on the pump-circuit acoustic coupling, and thus they can lead to excessive levels of noise and vibration under certain conditions. The purpose of the present investigation is the theoretical and experimental characterization of the perturbations induced in a laboratory pumping system, as a function of the acoustic impedance of the pipelines. For different operation points of the pump, the blade-passing frequency impedance is changed by varying the speed of rotation and, additionally, by modifying a dead-end region of the hydraulic system (that is, in the absence of net flow through it). For the theoretical calculations an acoustic model, based on matrix formulation, is applied to obtain the influence of different acoustic impedances of the suction side on the pressure fluctuations at the pump. Test measurements with a fast-response piezoelectric pressure transducer which is situated at the tongue region of the pump under the same system configurations confirm the significant effect of the pump-circuit acoustic coupling on the pressure perturbations.
Skip Nav Destination
ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
July 24–29, 2011
Hamamatsu, Japan
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-4440-3
PROCEEDINGS PAPER
Effects of the Pump-Circuit Acoustic Coupling on the Blade-Passing Frequency Perturbations
Jens Keller,
Jens Keller
Universidad de Oviedo, Gijo´n, Asturias, Spain
Search for other works by this author on:
Rau´l Barrio,
Rau´l Barrio
Universidad de Oviedo, Gijo´n, Asturias, Spain
Search for other works by this author on:
Jorge Parrondo,
Jorge Parrondo
Universidad de Oviedo, Gijo´n, Asturias, Spain
Search for other works by this author on:
Joaqui´n Ferna´ndez,
Joaqui´n Ferna´ndez
Universidad de Extremadura, Badajoz, Extramadura, Spain
Search for other works by this author on:
Javier Pe´rez
Javier Pe´rez
Siemens Espan˜a SA, Madrid, Spain
Search for other works by this author on:
Jens Keller
Universidad de Oviedo, Gijo´n, Asturias, Spain
Rau´l Barrio
Universidad de Oviedo, Gijo´n, Asturias, Spain
Jorge Parrondo
Universidad de Oviedo, Gijo´n, Asturias, Spain
Joaqui´n Ferna´ndez
Universidad de Extremadura, Badajoz, Extramadura, Spain
Javier Pe´rez
Siemens Espan˜a SA, Madrid, Spain
Paper No:
AJK2011-06071, pp. 387-396; 10 pages
Published Online:
May 25, 2012
Citation
Keller, J, Barrio, R, Parrondo, J, Ferna´ndez, J, & Pe´rez, J. "Effects of the Pump-Circuit Acoustic Coupling on the Blade-Passing Frequency Perturbations." Proceedings of the ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D. Hamamatsu, Japan. July 24–29, 2011. pp. 387-396. ASME. https://doi.org/10.1115/AJK2011-06071
Download citation file:
9
Views
Related Proceedings Papers
Related Articles
On a General Method of Unsteady Potential Calculation Applied to the Compression Stages of a Turbomachine—Part II: Experimental Comparison
J. Fluids Eng (December,2001)
The Effect of the Operating Point on the Pressure Fluctuations at the Blade Passage Frequency in the Volute of a Centrifugal Pump
J. Fluids Eng (September,2002)
Experimental Investigation of Rotor-Stator Interaction in a Centrifugal Pump With Several Vaned Diffusers
J. Turbomach (January,1990)
Related Chapters
Introduction
Mixed-flow Pumps: Modeling, Simulation, and Measurements
Introduction
Design of Mechanical Bearings in Cardiac Assist Devices
Siphon Seals and Water Legs
Hydraulics, Pipe Flow, Industrial HVAC & Utility Systems: Mister Mech Mentor, Vol. 1