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Relevant bibliographies by topics / Centrifugal compressor stage / Dissertations / Theses

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Dissertations / Theses on the topic 'Centrifugal compressor stage'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Human, Dirk Cornelius. "Predicting stage performance of a multi-stage centrifugal compressor using the overall compressor performance characteristic." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/79588.

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The reliable operation of Integrally Geared Centrifugal Compressors (IGCCs), used in the coal-fired power generation industry of South Africa, is essential for economic, environmental and safety considerations. However, due to the unavailability of individual stage performance curves, the ability of a compressor owner to identify underperforming stages to maintain these compressors proactively remains limited. This study addresses the stage performance prediction of an IGCC when only the compressor’s overall performance characteristic, in conjunction with the impeller diameters and tip speeds,

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2

Gould, Kenneth A. (Kenneth Arthur). "Characterization of unsteady flow processes in a centrifugal compressor stage." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35577.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2006.<br>Includes bibliographical references (p. 137).<br>Numerical experiments have been implemented to characterize the unsteady loading on the rotating impeller blades in a modem centrifugal compressor. These consist of unsteady Reynolds-averaged Navier Stokes simulations of three-dimensional and quasi-two dimensional approximate models. The interaction between the rotating impeller and the stationary downstream diffuser has been identified as strong source of unsteady loading on the impeller blades

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3

Erickson, David W. S. M. Massachusetts Institute of Technology. "Characterization of performance-limiting flow mechanisms in a centrifugal compressor stage." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/108928.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 269-270).<br>This research characterizes the performance of a centrifugal compressor stage with a special focus on the pipe diffuser. Two diffuser configurations are studied, one of which is a truncated version of the other. Experimental data acquired on a research compressor stage is interrogated along with a set of well-designed Reynolds-Averaged Navier Stokes computations, complemented by reduced order f

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4

Kumlu, Armagan. "CFD INVESTIGATION OF IMPELLER DIFFUSER INTERACTION EFFECTS ON RADIAL COMPRESSOR STAGE." Thesis, KTH, Kraft- och värmeteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-157534.

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The effects of impeller-diffuser interaction are investigated through numerically simulating the modified wedge vane profiles. Steady and time-accurate, 3D- viscous RANSsolver is used to perform flow field computations. The original design is modified to obtain better aerodynamic performance. Five morechanges are made to the leading edge profile of the new design, in order to assess different degrees of unsteadiness. These changes show that their contribution on stageefficiency is rather minor, while they have a huge reduction on blade loadings. Moreover, it is shown that the shorter radial di

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5

Walton, Edward James. "Forced response of a centrifugal compressor stage due to the impeller-diffuser interaction." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/87485.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 135-136).<br>The unsteady pressure field experienced by a centrifugal compressor stage can be dominated by of the impeller-diffuser interaction. The energy of the unsteady field, under certain aerodynamic and structural conditions, is capable of forcing the rotating impeller blades to vibrate excessively to the point of failure, better known as a high cycle fatigue (HCF) failure. This thesis seeks to identi

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6

Zachau, Uwe. "Experimental investigation on the diffuser flow of a centrifugal compressor stage with pipe diffuser /." Aachen : Shaker, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016479744&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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7

Zachau, Uwe [Verfasser]. "Experimental Investigation on the Diffuser Flow of a Centrifugal Compressor Stage with Pipe Diffuser / Uwe Zachau." Aachen : Shaker, 2007. http://d-nb.info/1164341510/34.

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8

Нефедов, А. Н., А. В. Смирнов, В. А. Левашов та В. В. Зимогляд. "Некоторые результаты исследования высокорасходной центробежной ступени с осерадиальным колесом, лопаточным и безлопаточным диффузорами". Thesis, Издательство СумГУ, 2009. http://essuir.sumdu.edu.ua/handle/123456789/13006.

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9

Chen, Nan [Verfasser], Oskar J. [Akademischer Betreuer] [Gutachter] Haidn, and Stefan [Gutachter] Schlechtriem. "Experimental and Numerical Investigation of a Centrifugal Compressor Stage with Variable Inlet Guide Vanes / Nan Chen ; Gutachter: Oskar J. Haidn, Stefan Schlechtriem ; Betreuer: Oskar J. Haidn." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1127728636/34.

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10

Guidotti, Emanuele <1977&gt. "Towards Centrifugal Compressor Stages Virtual Testing." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6550/1/Guidotti_Emanuele_tesi.pdf.

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Flow features inside centrifugal compressor stages are very complicated to simulate with numerical tools due to the highly complex geometry and varying gas conditions all across the machine. For this reason, a big effort is currently being made to increase the fidelity of the numerical models during the design and validation phases. Computational Fluid Dynamics (CFD) plays an increasing role in the assessment of the performance prediction of centrifugal compressor stages. Historically, CFD was considered reliable for performance prediction on a qualitatively level, whereas tests were necessary

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11

Guidotti, Emanuele <1977&gt. "Towards Centrifugal Compressor Stages Virtual Testing." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6550/.

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Flow features inside centrifugal compressor stages are very complicated to simulate with numerical tools due to the highly complex geometry and varying gas conditions all across the machine. For this reason, a big effort is currently being made to increase the fidelity of the numerical models during the design and validation phases. Computational Fluid Dynamics (CFD) plays an increasing role in the assessment of the performance prediction of centrifugal compressor stages. Historically, CFD was considered reliable for performance prediction on a qualitatively level, whereas tests were necessary

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12

Barile, Kristina (Kristina Marie). "Impeller loss reduction in multi-stage centrifugal compressors." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97364.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 74-75).<br>Loss generation features for the first stage impeller in a multistage centrifugal compressor are examined using three-dimensional RANS computations. The calculations were carried out for a baseline configuration and for seven other impeller configurations, with the constraints of constant mass flow and constant work per unit mass flow. The computations showed an 8 percent reduction in loss, compa

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13

Aubry, Anne-Raphaëlle. "Return channel loss reduction in multi-stage centrifugal compressors." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76091.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 61-63).<br>This thesis presents concepts for improving the performance of return channels in multi-stage centrifugal compressors. Geometries have been developed to reduce both separation and viscous losses. A number of different features with potential to reduce separation have also been investigated. The final proposed geometry uses a vaneless diffuser which narrows on the shroud side at the beginning of the 180'

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14

Clements, W. W. "A theoretical and experimental study of diffusion levels in centrifugal compressor stages." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383780.

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15

Cicciotti, Matteo. "Adaptive monitoring of health-state and performance of industrial centrifugal compressors." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/51468.

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Tens of thousands of centrifugal compressors are installed worldwide in chemical and petrochemical plants. The performance of these compressors degrade during the operation as a consequence of effects such as fouling, erosion, corrosion, and abrasion. A performance monitoring method that could detect and assess the magnitude of the degradation would be greatly beneficial to schedule production and maintenance leading to an economic profit for the operation. After searching the literature, it was concluded that such a method is yet to be developed for industrial centrifugal compressors. This th

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16

Nishta, B. V. "Computer analysis of the stress-deformation state of the centrifugal compressor and gas turbine impellers." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40623.

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Impellers are rotating components of a centrifugal compressor and gas turbine. Sometimes they have complex forms. They are mainly loaded by centrifugal forces. The wheels are heavy duty parts, often working for long time and their summary stresses may be so large that the analysis of the conditions of their strength is impossible without considering creep. At the same time the wheels are the most critical parts of machines and saving their strength should be provided with complete reliability. All this is defined by special difficulties and responsibilities of the compressor and turbine wheel

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