Thermal management has become a key point in the development of contemporary electronics systems. It is evident that heat fluxes are currently approaching the limits of conventional forced air cooling, and that liquid technologies are now under consideration. The objective of this paper is to investigate the flow fields within a miniature scale centrifugal pump in order to determine velocity profiles describing the flow. The experimental setup consisted of a hydrodynamic test bed constructed to measure the pressure-flow characteristic of a centrifugal pump with a rated volumetric flow of 9 l/min. The impeller diameter of the pump under consideration was 34.3mm, and the characterisation experiments were carried out at a constant impeller speed. Particle-Image Velocimetry (PIV) was used to measure velocity profiles within the volute section of the pump. Synchronised velocity profiles are illustrated for three operating points on the pump characteristic curve. A hydrodynamic analysis of the velocity vectors at the impeller tip is also included, and pump model verification is then discussed based on the comparison between the theoretical predictions and the PIV data.

1.
Rodgers, P., Eveloy, V. and Pecht, M., 2005, “Extending the Limits of Air-Cooling in Microelectronic Equipment”, (Keynote Presentation), Proceedings of the IEEE EuroSIME, pp. 695–702.
2.
Garimella
S. V.
,
Joshi
Y. K.
,
Bar-Cohen
A.
,
Mahajan
R.
,
Toh
K. C.
,
Carey
V. P.
,
Baelmans
M.
,
Lohan
J.
,
Sammakia
B.
and
Andros
F.
,
2002
, “
Thermal Challenges in Next Generation Electronic Systems - Summary of Panel Presentations and Discussions
”,
IEEE Transactions on Components and Packaging Technologies
, Vol.
25
, Issue
4
, pp.
569
575
.
3.
Singhal
V.
,
Garimella
S. V.
and
Raman
A
2003
, “
Microscale Pumping Technologies for Microchannel Cooling Systems
”,
Applied Mechanics Review
, Vol.
57
, No.
3
, May, pp.
191
221
.
4.
Paone
N.
,
Reithmuller
M. L.
and
Van de Braembussche
,
1989
, “
Experimental Investigation of the Flow in the Vaneless Diffuser of a Centrifugal Pump by Particle Image Displacement Velocimetry
”,
Experiments in Fluids
7
, pp.
371
378
.
5.
Stepanoff, A. J., 1957, “Centrifugal and axial flow pumps: theory, design and application” 2nd Edition, John Wiley and Sons, New York.
6.
EN ISO 5198:1998, “Centrifugal, Mixed Flow and Axial Pumps - Code for Hydraulic Performance Tests - Precision Class”
7.
Reithmuller, M. L., 1996, “Particle Image Velocimetry-Lecture Series 1996-03”, Von Karman Institute, Chapter 3, pp. 51–52.
8.
Pedersen
N.
,
Larsen
P. S.
and
Jacobsen
C. B
,
2003
, “
Flow in a Centrifugal Pump Impeller at Design and Off-Design Conditions-Part 1: Particle Image Velocimetry (PIV) and Laser Doppler Velocimetry (LDV) Measurements
”,
Journals of Fluids Engineering
, January, Vol.
125
, pp.
61
72
This content is only available via PDF.
You do not currently have access to this content.