Numerical Studies on Centrifugal Impeller Performance with Different Lean Combinations

K V Jagadeeshwar Chary

Numerical Studies on Centrifugal Impeller Performance with Different Lean Combinations

K V Jagadeeshwar Chary *

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Numerical Studies on Centrifugal Impeller Performance with Different Lean Combinations

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Abstract

Centrifugal compressors are designed for a given operating pressure and mass flow rate. These machines are often run at off-design conditions depending on the requirement from industrial to Aerospace applications. The need to maintain relatively high efficiency under offdesign conditions with adequate stall margin makes the compressor design more challenging. These necessities demand improvement in the flow conditions through the impeller by optimizing the vane shape. Much of the research was carried out on impeller vane shape to minimize the wake regions at impeller exit, and one such effort was to introduce a blade lean at impeller inlet and exit. An investigation from the experimental studies revealed the authors that the introduction of lean at exit suppressed the wake flow regions and henceforth improved the impeller performance either with improved pressure rise or with increased stall margin. Though many of the research studies have proven the influence of lean on the change in the Centrifugal impeller performance, the study was pertained with a combination of positive inlet and exit leans or negative inlet and exit leans that has shown no change in surge margin improvement.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

K V Jagadeeshwar Chary. 2017. "Numerical Studies on Centrifugal Impeller Performance with Different Lean Combinations". Global Journal of Research in Engineering GJRE-D Volume 17 (GJRE Volume 17 Issue D2).

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GJRE Volume 17 Issue D2

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

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Classification

GJRE-D Classification FOR Code: 290299p

Submission ReceivedDecember 9, 2016
Peer Review Double Blind
Handling Editor
Accepted January 3, 2017
Published December 27, 2017

Version of record

v1.2

Issue date

December 27, 2017

Language

English

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Article Matrices

Total Score: 103

Country: India

Subject: Global Journal of Research in Engineering

Authors: K.V Jagadeeshwar Chary, K. Vijaya Kumar Reddy, T.Ch. Siva Reddy (PhD/Dr. count: 0)

View Count (all-time): 426

Total Views (Real + Logic): 773

Total Downloads (simulated): 65

Publish Date: 2017 01, Sun

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Total Views: 773

Total Downloads: 65

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