论文信息 - The Influence of Diffuser Channel Geometry on the Flow Range and Efficiency of a Centrifugal Compressor

The Influence of Diffuser Channel Geometry on the Flow Range and Efficiency of a Centrifugal Compressor

A small centrifugal compressor was tested with a series of straight wedge diffusers which had included channel divergence angles 2θ ranging from 4° to 14°. Diffusers employing sidewall divergence were also tested. Detailed pressure measurements were made with all of the diffusers. A channel divergence angle of 12° was found to be optimum since increasing the divergence angle beyond 12° produced no efficiency improvements but reduced the flow range of the compressor. Channels employing sidewall divergence produced almost identical efficiency and flow range to channels of the same area ratio without sidewall divergence

W W Clements | D W Artt

[1] D. P. Kenny. A Comparison of the Predicted and Measured Performance of High Pressure Ratio Centrifugal Compressor Diffusers , 1972 .

[2] S. J. Kline,et al. Performance and Design of Straight, Two-Dimensional Diffusers , 1967 .

[3] R. E. Nece,et al. Closure to “Discussions of ‘Chamber Dimension Effects on Induced Flow and Frictional Resistance of Enclosed Rotating Disks’” (1960, ASME J. Basic Eng., 82, pp. 230–232) , 1960 .

[4] D. Japikse,et al. Assessment of Single- and Two-Zone Modeling of Centrifugal Compressors, Studies in Component Performance: Part 3 , 1985 .

[5] David Japikse,et al. Optimization of Industrial Centrifugal Compressors: Part 6B — Studies in Component Performance — Laboratory Development of Eight Stages From 1972 to 1982 , 1986 .

[6] Joel H. Ferziger,et al. A Prediction Method for Planar Diffuser Flows , 1981 .

[7] Fumikata Kano,et al. Study of Flow Distribution and Aerodynamic Performance of Centrifugal Compressor , 1982 .

[8] David Japikse,et al. A Critical Evaluation of Three Centrifugal Compressors With Pedigree Data Sets: Part 5 — Studies in Component Performance , 1986 .

[9] Robert C. Dean,et al. Straight Channel Diffuser Performance at High Inlet Mach Numbers , 1969 .

[10] R. Elder,et al. A discussion of the factors affecting surge in centrifugal compressors , 1985 .

[11] J. A. Hoffmann. Effects of free-stream turbulence on diffuser performance , 1981 .