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Modeling and Simulation Research on Aerostatic Bearing with Orifice Array

Author: ChenGaiGe
Tutor: YangTao
School: Southwest University of Science and Technology
Course: Control Theory and Control Engineering
Keywords: Air bearing Restrictor array Computational Fluid Dynamics (CFD) Equivalent circuit modeling and simulation Piecewise nonlinear interpolation
CLC: TH133.3
Type: Master's thesis
Year: 2011
Downloads: 67
Quote: 0
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Abstract


Air bearing support contact sports wear and precise positioning , array type air bearings have important applications in the special industrial occasions . Based on computational fluid dynamics (CFD) software FLUENT the viscous turbulent three - dimensional double-precision standard two-equation model , analysis of the impact of the of the restrictor number of characteristics of multi restrictor coupled array type air bearing gas film , and the results can be provide a reference for the design of the air bearing can also provide data for modeling analytical model for the establishment the restrictor array of film pressure . CFD method restrictor array of film bearing capacity long time , restrictor unit gas film equivalent circuit modeling and segmentation nonlinear interpolation combined . Established element the gas film equivalent circuit model and determine the interpolation function unit gas film bearing capacity , circuit simulation and interpolation calculation error of 3.7% , compared with the CFD simulation results . Thereby establishing a 3 × 4 and 4 × 4 the restrictor array equivalent circuit model , quickly calculate the gas film bearing capacity of the two arrays . Restrictor 4 × 4 array of physical tests to verify the results of CFD simulation , CFD results for the reference is worth the equivalent circuit method of calculation of the bearing capacity of the two array of film error of 10.16% and 8.74% , calculated the time and the results of the error that the validity of the model unit . The method to shorten the calculation time of the array of film bearing capacity , greater array of arrays and other structural parameters of film carrying capacity equivalent calculated to provide a viable program .

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > Moving parts > Bearing
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