Performance evaluation of a micro gas turbine centrifugal compressor diffuser by david schabort krige thesis presented in fulfilment of the requirements for the degree of. Concerned with measurement and modelling of centrifugal compressor surge surge is studied in a laboratory gas turbine installation 11 axial and centrifugal compressors the topic of this thesis is the physical understanding and modelling of surge in compressors. The compressor recycle system is the main focus of this thesis when the mass ow through a compressor becomes too low, the compressor can plunge into surge 22 the centrifugal compressor 4. Control of an ultrahigh speed centrifugal compressor for the air management of fuel cell systems other université de technologie de belfort-montbeliard, 2013 in this thesis, the requirements to the compressor for fuel cell applications are dis-cussed. Figure 1 pratt and whitney canada centrifugal compressor motivations centrifugal compressors are vital to many mechanical systems the focus of this thesis is on these types of. A detailed description of a new centrifugal compressor surge test rig is presented modeling and bounded feedback stabilization of a centrifugal compressor surge, phd thesis, department of mechanical engineering, eindhoven university of technology, eindhoven, the netherlands, 2000. Design optimization of a centrifugal compressor vaneless diffuser optimisation de la conception du diffuseur sans aube d'un compresseur centrifuge centrifugal compressors are used in many heat pumps and refrigeration systems phd thesis lappeenranta university of technology, finland.
Abstract this thesis outlines the development of a centrifugal compressor model for the turbocharger component matching system (tucms) software package that can be used. Computational analysis of stall and separation control in centrifugal compressors a thesis presented to the academic faculty by alexander stein in partial fulfillment. Modeling for control of centrifugal compressors oskar leufvén four weeks prior to the thesis print deadline in eitherway,picturecourtesyofjohanleufvén typesetwithlatex2 the compressor of a single turbo system is sized after the maximum engine. A computational model of a centrifugal compressor stage for aircraft engines ing david hlaváček thesis supervised by: doc ing daniel hanus, csc, eur ing, afaiaa.
Inverse-design and optimization methods for centrifugal pump impellers / westra, rw enschede, 2008 173 p research output: scientific phd thesis - research ut, graduation ut. Thesis centrifugal compressor the airline industry is responsible for the transportation of people, goods and post around the globe (cp netzer 1999, p 18.
Both centrifugal compressors and axial compressors are continuous ﬂ ow clearance between the rotating blades and their outer case is also design and optimization of turbo compressors design and optimization of turbo compressors + e = r + s (1), , r. Centrifugal compressor ow instabilities at low mass ow rate by elias sundstr om driven instabilities developing in centrifugal compressors at unstable o -design in the rst part of the thesis some selected fundamentals of compressible turbulent. The nonuniformity of the flow field induced by a nonaxisymmetric volute significantly degrades the stability of a turbocharger centrifugal compressor of improving the turbocharger centrifugal compressor stability by asymmetric vaneless diffuser treatment, master thesis, tsinghua. We, the undersigned committee, hereby approve the attached thesis, an analysis of capital cost estimation techniques for chemical processing by omar joel figure 21: cost vs capacity plot for a carbon steel centrifugal compressor34 figure 22.
Electronic thesis and dissertation repository june 2012 numerical investigation of highly curved turbulent flows in centrifugal compressors and in a simplified geometry kevin j elliott the university of western ontario supervisor dr chao zhang. Design optimization of centrifugal compressor impeller amr hassan elnashar , dr abdel-rhaman m m , cairo university giza, egypt doctorial (phd) thesis , 2008.
Numerical investigation of the performance and flow behaviour of centrifugal compressors a thesis submitted to the university of manchester for the. To the graduate council: i am submitting herewith a thesis written by nicholas joseph fredrick entitled investigation of the effects of inlet swirl on compressor performance and operability using a modified parallel. Summary in this thesis adaptive surge control in axial and centrifugal compressor with unknown characteristic was studied the compressor to be viewed as the control target, was a part. The accurate prediction of centrifugal compressor stability continues to be an important area of interest in the oil and gas industries ensuring stability is critical to the cost-effective installation and operation of these machines in remote environments, where field stability problems are much more expensive to diagnose and correct.