윤지인 신유환 이윤표 김광호 2024-01-20T15:02:51Z 2024-01-20T15:02:51Z 2021-09-06 2012-04 2287-9706 https://pubs.kist.re.kr/handle/201004/129357 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. Korean 한국유체기계학회 PIV측정에 의한 깃 없는 디퓨저에서의 유동특성 The Flow Characteristics in a Vaneless Diffuser by PIV Measurements Article 2 한국유체기계학회 논문집, v.15, no.2, pp.45 - 50 한국유체기계학회 논문집 15 2 45 50 kci ART001648937 PIV(입자상관유속계) Vaneless diffuser(깃 없는 디퓨저) Centrifugal impeller(원심임펠러) Flow field(유동장)