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Showing 1 to 20 of 38 for “"Centrifugal compressor"”.
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Active control of centrifugal-compressor surge
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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A methodology for centrifugal compressor stability prediction
The stable operation of centrifugal compressors is limited by well-known phenomena, rotating stall and surge. Although the manifestation of the full scale instabilities is similar to the ones observed in axial machines, the stall inception in centrifugal compressors is less well understood. This …
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Multi-parameter control for centrifugal compressor performance optimization
… to implement a multi-parameter control on a centrifugal compressor system is assessed. The assessment consists of first developing a one-dimensional meanline model for estimating performance of centrifugal compressor system followed by the formulation of a control framework incorporating the …
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Forced response predictions in modern centrifugal compressor design
… and time-unsteady flow fields of two centrifugal compressors of nearly identical design (the enhanced, which encountered aeromechanical difficulty, and production, which did not encounter any such difficulty) is undertaken in an effort to establish a causal link between …
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Numerical Study Of A High-speed Miniature Centrifugal Compressor
A miniature centrifugal compressor is a key component of a reverse Brayton cycle cryogenic cooling system. The system is commonly used to generate a low cryogenic temperature environment for electronics to increase their efficiency, or generate, store and transport cryogenic liquids, such as liquid …
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Design method for centrifugal compressor and centripetal turbine impellers
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1957.
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Effects of impeller-diffuser interaction on centrifugal compressor performance
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Dynamic control of centrifugal compressor surge using tailored structure
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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Centrifugal compressor return channel shape optimization using adjoint method
… using the adjoint method and its application to centrifugal compressor return channel loss reduction. A proper objective function definition and a generalized geometry parametrization and manipulation algorithm were developed, and the appropriate adjoint equations and boundary conditions were …
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Characterization of unsteady flow processes in a centrifugal compressor stage
… 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 …
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Effects of Two-Phase Flow in a Multistage Centrifugal Compressor
… by the ingestion of liquid droplets in the compressor. In these multiphase flows, the liquid and the vapor phase are tightly coupled. Therefore the interphase heat, mass and momentum transfer as well as droplet dynamics including droplet breakup and droplet-wall interactions play a vital …
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Characterization of performance-limiting flow mechanisms in a centrifugal compressor stage
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 …
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Fluid mechanics of ported shroud centrifugal compressor for vehicular turbocharger applications
… casing treatment used in turbocharger centrifugal compressors for increasing the operable range. Computed results, assessed with experimental measurements on ported and non-ported variants of a representative turbocharger compressor, are used to determine the impact of the PS on the …
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An experimental investigation of centrifugal compressor surge and stall phenomena in turbochargers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1984.
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Forced response of a centrifugal compressor stage due to the impeller-diffuser interaction
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 …
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An experimental investigation of a low Reynolds number, high Mach number centrifugal compressor
… facility to study the performance of very small centrifugal compressors suitable for microfabrication. ThE test facility was 75 times larger than the full-scale device and operated under 17/5 atmospheric pressure conditions to correctly match the Reynolds number, which is about 20,000. The …
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Design of a centrifugal compressor integrated with a hermetic motor for automotive airconditioners
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1993
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Scalloped Leading Edge Vaned Diffuser Analysis for a Compact High Pressure Ratio Centrifugal Compressor
… a compact, single stage 8:1 pressure ratio centrifugal compressor stage designed to meet the high-pressure ratio requirements of microturbines and small gas turbine engines in turbo hybrid-electric propulsion applications. The first stage vaned diffuser was modified to include a scalloped …
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A study on flow development in an APU-style inlet and its effect on centrifugal compressor performance
… inside an APU-style inlet and its effect on centrifugal compressor performance. The motivation arises from the increased applications of gas turbine engines installed with APU-style inlets such as unmanned aerial vehicles, auxiliary power units, and helicopters. The inlet swirl distortion …
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