Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors—Additional FindingsSource: Journal of Engineering for Gas Turbines and Power:;2018:;volume( 140 ):;issue: 012::page 124501Author:Halawa, Taher
DOI: 10.1115/1.4039820Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study presents additional important findings to the results of the research paper; “Optimization of the efficiency of stall control using air injection for centrifugal compressors” published in the Journal of Engineering for Gas Turbines and Power in 2015 (Halawa, T., Gadala, M. S., Alqaradawi, M., and Badr, O., 2015, “Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors,” ASME J. Eng. Gas Turbines Power, 137(7), p. 072604). The aim of this study is to make a fine determination of the injection angle, which provides the best stable condition when the compressor operates close to stall condition. A relatively narrower range of injection angles with smaller intervals was selected comparing to the results of the referred published paper, which clarified that the best injection angle is 30 deg. External air was injected close to the diffuser entrance at the shroud surface. Injection was applied with mass flow rate equals 1.5% of the design compressor inlet mass flow rate with injection angles ranged from 16 deg to 34 deg measured from the tangential direction at the vaneless region. It was found that both of injection angles of 28 deg and 30 deg achieved the best results in terms of compressor stabilization but each one of them has a specific advantage comparing to the other one. Using injection angle of 28 deg provided the lowest kinetic energy losses while the best orientation of the fluid through diffuser resulted when using an injection angle of 30 deg.
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contributor author | Halawa, Taher | |
date accessioned | 2019-02-28T10:57:26Z | |
date available | 2019-02-28T10:57:26Z | |
date copyright | 8/9/2018 12:00:00 AM | |
date issued | 2018 | |
identifier issn | 0742-4795 | |
identifier other | gtp_140_12_124501.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4251155 | |
description abstract | This study presents additional important findings to the results of the research paper; “Optimization of the efficiency of stall control using air injection for centrifugal compressors” published in the Journal of Engineering for Gas Turbines and Power in 2015 (Halawa, T., Gadala, M. S., Alqaradawi, M., and Badr, O., 2015, “Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors,” ASME J. Eng. Gas Turbines Power, 137(7), p. 072604). The aim of this study is to make a fine determination of the injection angle, which provides the best stable condition when the compressor operates close to stall condition. A relatively narrower range of injection angles with smaller intervals was selected comparing to the results of the referred published paper, which clarified that the best injection angle is 30 deg. External air was injected close to the diffuser entrance at the shroud surface. Injection was applied with mass flow rate equals 1.5% of the design compressor inlet mass flow rate with injection angles ranged from 16 deg to 34 deg measured from the tangential direction at the vaneless region. It was found that both of injection angles of 28 deg and 30 deg achieved the best results in terms of compressor stabilization but each one of them has a specific advantage comparing to the other one. Using injection angle of 28 deg provided the lowest kinetic energy losses while the best orientation of the fluid through diffuser resulted when using an injection angle of 30 deg. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors—Additional Findings | |
type | Journal Paper | |
journal volume | 140 | |
journal issue | 12 | |
journal title | Journal of Engineering for Gas Turbines and Power | |
identifier doi | 10.1115/1.4039820 | |
journal fristpage | 124501 | |
journal lastpage | 124501-4 | |
tree | Journal of Engineering for Gas Turbines and Power:;2018:;volume( 140 ):;issue: 012 | |
contenttype | Fulltext |