The Flow Characteristics in a Vaneless Diffuser by PIV Measurements

Title
The Flow Characteristics in a Vaneless Diffuser by PIV Measurements
Authors
윤지인신유환이윤표김광호
Keywords
PIV; Vaneless diffuser; Centrifugal impeller; Flow field; 입자상관유속계; 깃 없는 디퓨저; 원심임펠러; 유동장
Issue Date
2012-04
Publisher
유체기계저널
Citation
VOL 15, NO 2, 45-50
Abstract
The flow characteristics in a vaneless diffuser with a backswept radial impeller have been experimentally investigated according to the variation of discharge flow rate. Particle image velocimetry(PIV) system was applied to measure velocity fields with several operating conditions and on some diffuser horizontal planes. Pressure transducers were installed on hub wall of the diffuser in order to analyze the pressure fluctuations and their corresponding velocity fields. The results show that the location of the main flow center moves from the hub to the shroud side as the flow rate decreases, and the reverse flow is locally generated on the hub side.
URI
http://pubs.kist.re.kr/handle/201004/43693
ISSN
12269883
Appears in Collections:
KIST Publication > Article
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