Browsing by Author "Fontana, Michele"
Now showing items 1-8 of 8
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Fontana, Michele; Baldassarre, Leonardo; Bernocchi, Andrea; Rizzo, Emanuele; Maiuolo, Francesco (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2015)The residual axial thrust acting on the rotor of a centrifugal compressor is the result of the non-uniform pressure distribution on the surfaces in contact with the process gas, plus the differential pressure acting on the ...
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Definition of a Screening Criterion for Centrifugal Compressor Vibrations Induced by Inlet Gas Flow Fontana, Michele; Bernocchi, Andrea; Carnevali, Alessandro; Baldassarre, Leonardo (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)Lecture 4: The gas flow entering from the inlet flange of a centrifugal compressor may induce radial forces on the rotor, by directly impinging onto shaft or by generating asymmetric pressure fluctuations in the gas volume ...
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Baldassarre, Leonardo; Fontana, Michele; Bernocchi, Andrea; Moretti, Michele (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)High pressure compressors are commonly equipped with honeycomb seal on the balance piston, as an effective mean to improve the rotordynamic stability of the system. The gas leakage flow across the honeycomb seal clearance ...
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Baldassarre, Leonardo; Bernocchi, Andrea; Failli, Leonardo; Fontana, Michele; Mitaritonna, Nicola; Rizzo, Emanuele (Texas A&M University. Turbomachinery Laboratories, 2014)High pressure centrifugal compressors are often equipped with honeycomb seal on balance drum in order to optimize rotordynamic stability. In very high pressures applications (>200 bar) the direct stiffness and damping of ...
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Baldassarre, Leonardo; Fontana, Michele (Texas A&M University. Turbomachinery Laboratories, 2010)Rotor bow during hot restart is a common cause of high vibrations in turbomachinery. It may occur after the shutdown of a machine operating under load, if the rotor is left cooling in standstill condition (no turning gear) ...
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Baldassarre, Leonardo; Bernocchi, Andrea; Fontana, Michele; Guglielmo, Alberto; Masi, Guido (Texas A&M University. Turbomachinery Laboratories, 2014)The rotordynamic stability of high pressure compressors is strongly affected by the aerodynamic effects induced by the gas flow through rotor-stator seals. In particular the tangential velocity (swirl) of the gas flowing ...
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Fontana, Michele; Bernochi, Andrea; Conte, Gianluca; Libraschi, Mirko; Baldassarre, Leonardo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2017)
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Leonardo Baldassarre; Querini, Lorenzo; Bernocchi, Andrea; Biliotti, Davide; Fontana, Michele; Venkatachalam, Ravi Shanmugam (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Turboexpanders are widely used as energy recovery systems, in plants where a stream of pressurized gas is available as output of the main process. The train is typically composed of a single or multi-stage radial inflow ...