A novel correlation of centrifugal compressor performance for off-design prediction

Kenny, D. P.

doi:10.2514/6.1979-1159

Cited by 20 publications

(23 citation statements)

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“…This highlights the inherent inaccuracy of relying on static pressure tappings to evaluate blockage in pipe diffusers. It was therefore quite surprising to the present authors that their data, assembled from direct measurements, correlated well with those attributed to Kenny [11], as his blockages were calculated principally from static pressure measurements. Near choke, the flow in these regions only incorporates small amounts of diffusion and generally, for the impeller shown, is shock free.…”

Section: Pipe Diffuser Design: Effect Of the Number Of Passages (Or Smentioning

confidence: 93%

“…Firstly, this is the first published independent investigation of throat blockage in pipe diffusers. All major previous work has originated from Pratt and Whitney and United Aircraft of Canada (see, for example, references [3] and [11]). Secondly, for the data presented, apart from the cluster of points shown near C p 0, all measurements of blockage are derived from direct measurements of the flow total pressure profile at the diffuser throat.…”

Section: Pipe Diffuser Design: Effect Of the Number Of Passages (Or Side-wall Expansion)mentioning

confidence: 99%

“…This implies that losses from the impeller tip to the diffuser throat were properly accounted for, unlike the other previous investigations used to compile pipe diffuser data. Kenny [11], in his correlations, relied on static pressure tappings and a total pressure correction based on the diffuser's fully choked condition. However, this correction did not account for the variation in losses with flowrate that are apparent within the pseudo-and semivaneless spaces.…”

Section: Pipe Diffuser Design: Effect Of the Number Of Passages (Or Side-wall Expansion)mentioning

confidence: 99%

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The design and analysis of pipe diffusers for centrifugal compressors

Bennett

Tourlidakis

Elder

2000

Proceedings of the Institution of Mechanical Engineers, Part A:

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The geometry of the region between the impeller tip and diffuser throat is accepted as being very influential, little understood and crucial to the performance of centrifugal compressors. This paper presents an experimental investigation of the flow in this region where the diffusing section of the compressor is of the 'pipe diffuser' configuration. The results are presented with an emphasis on designtype correlations. The principal features under investigation were the size of the diffuser throat and the influence of the number of diffuser passages.

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Section: Pipe Diffuser Design: Effect Of the Number Of Passages (Or Smentioning

confidence: 93%

Section: Pipe Diffuser Design: Effect Of the Number Of Passages (Or Side-wall Expansion)mentioning

confidence: 99%

Section: Pipe Diffuser Design: Effect Of the Number Of Passages (Or Side-wall Expansion)mentioning

confidence: 99%

See 1 more Smart Citation

The design and analysis of pipe diffusers for centrifugal compressors

Bennett

Tourlidakis

Elder

2000

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…The formula is not as complicated as it might appear. It represents the sum of the tracings (Kenny, 1979) of the paths in Figure 2.…”

Section: Additional Steps In the Analysismentioning

confidence: 99%

Measuring similarity in couples.

Kenny

Acitelli²

1994

Journal of Family Psychology

101

120

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The relationship between partner similarity and marital quality variables was explored by the use of a new method for the analysis of data from marital pairs. Forty-two married couples were given the Personal Assessment of Intimate Relationships inventory (M. T. Schaefer & D. H. Olson, 1981), and a method was devised for the removal of stereotype effects, that is, the tendency for partners to be similar to one another because they respond in a way that is typical of others. Similarity between wives and husbands decreased when adjusted for stereotype effects. There were no statistically significant relationships between couple similarity and measures of marital quality, with or without the adjustment for stereotype effects. However, there was evidence for both husbands and wives of an association between responding as typical husbands did and perceptions of satisfaction in the marital relationship. This result indicates that a stereotype effect may be a meaningful phenomenon rather than just a statistical artifact.

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“…Design operating conditions for the compressor are given in Table III The design incorporates a pipe diffuser because of its high performance and wide operating range. Pipe diffuser characteristics are described by Kenny (1968Kenny ( , 1979 and Reeves (1977), for example. A partial cross section of the pipe diffuser is shown in Fig.…”

Section: Description Of the Compressormentioning

confidence: 99%

Variable Geometry Pipe Diffusers

Salvage

1996

Volume 1: Turbomachinery

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Theoretical analyses and experimental results are reported for two unique variable geometry techniques used with pipe diffusers to enhance off-design performance. One technique mechanically closes the diffuser throat in an unusual manner. The other allows flow recirculation to close the throat artificially while attempting to improve diffuser inlet flow characteristics. Results clearly show that surge margin may be significantly improved by either method and that flow recirculation may offer improved efficiency.

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A novel correlation of centrifugal compressor performance for off-design prediction

Cited by 20 publications

References 0 publications

The design and analysis of pipe diffusers for centrifugal compressors

The design and analysis of pipe diffusers for centrifugal compressors

Measuring similarity in couples.

Variable Geometry Pipe Diffusers

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