Detailed flow measurements in a centrifugal compressor vaneless diffuser

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Journal of Turbomachinery; (United States)

DOI:https://doi.org/10.1115/1.2929432· OSTI ID:7056186

Pinarbasi, A ^[1]; Johnson, M W ^[2]

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1. Univ. of Cumhuriyet, Sivas (Turkey). Dept. of Mechanical Engineering
2. Univ. of Liverpool (United Kingdom). Dept. of Mechanical Engineering

Hot-wire anemometer measurements have been made in the vaneless diffuser of a 1-m-dia low-speed backswept centrifugal compressor using a phase lock loop technique. Radial, tangential, and axial velocity measurements have been made on eight measurement planes through the diffuser. The flow field at the diffuser entry clearly shows the impeller jet-wake flow pattern and the blade wakes. The passage wake is located on the shroud side of the diffuser and mixes out slowly as the flow moves through the diffuser. The blade wakes, on the other hand, distort and mix out rapidly in the diffuser. Contours of turbulent kinetic energy are also presented on each of the measurement stations, from which the regions of turbulent mixing can be deduced.

• OSTI ID: 7056186
• Journal Information: Journal of Turbomachinery; (United States), Journal Name: Journal of Turbomachinery; (United States) Vol. 116:3; ISSN JOTUEI; ISSN 0889-504X
• Country of Publication: United States
• Language: English

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