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Search results for: SQUEEZE FILM
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Running performance of an aerodynamic journal bearing with squeeze film effect
PublicationResults of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing of which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper. The SFUL mechanism not only can separate journal from the bearing at the start and stop phases of operation but also can significantly contribute to the dynamic stability of the bearing when it runs at speed. Computer calculations...
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Numerical modelling and experimental verification of compressible squeeze film pressure
PublicationThe validity of using the Reynolds equation for compressible squeeze film pressure was tested with computational fluid dynamics (CFD). A squeeze film air bearing was instrumented with pressure sensors and non-contacting displacement probes to provide transient measurements of film thickness and pressure. The film thickness measurements also provided input parameters to the numerical prediction. However, numerical results showed...
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Experimental Verification of the CFD Model of the Squeeze Film Lifting Effect
PublicationAbstract: The presented study shows the results of the research into the squeeze film levitation phenomena. The system introduced in the investigation is composed of a vibrating surface, air squeeze film, and the surface of the body freely suspended over the film. The use of the CFD (Computational Fluid Dynamics) model used in the system allows us to determine the steady state, periodic behavior of the air film (described by Navier–Stokes,...
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Film & history
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Film-Philosophy
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Film International
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PUBLIC GOODS VERSUS THE FARM PRICE-COST SQUEEZE: SHAPING THE SUSTAINABILITY OF THE EU’S COMMON AGRICULTURAL POLICY
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THIN SOLID FILMS
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Thick film traps with an irregular film. Preparation and evaluation.
PublicationOpisano nową metodę wytwarzania otwartych pułapek kapilarnych do wzbogacania lotnych związków organicznych z próbek gazowych. Badanie właściwości tego typu pułapek wykazało, że spadek ich sprawności chromatograficznej w porównaniu z pułapkami z filmem regularnym, jest rzędu 20-30%. Opracowana technologia jest bardzo prosta i pozwala na szybkie i tanie wytwarzanie dużych ilości pułapek z grubymi filmami również przez niewyspecjalizowane...
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Journal of Film Music
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Journal of Religion and Film
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Film Fashion & Consumption
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JOURNAL OF FILM AND VIDEO
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Studies in Documentary Film
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Short Film Studies
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MILLENNIUM FILM JOURNAL
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Running characteristics of aerodynamic bearing with self-lifting capability at low rotational speed
PublicationAn aerodynamic journal bearing that is capable of self-generating squeeze-film pressure is presented and its dynamic characteristics investigated numerically and experimentally. A numerical method based on a time marching static model was applied to assess the orbit trajectory path of the rotor upon a perturbation. Experimental results were obtained to validate the effect of the self- generated squeeze-film pressure on the stability...