Experimental Modeling of a Long Orifice-type Restrictor of High Speed Turbine Hybrid Bearing
Publish Year: 1395
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-29-3_012
تاریخ نمایه سازی: 12 دی 1395
Abstract:
To overcome the space limitation of orifice-type and capillary restrictors in hybrid bearings, a kind ofatypical long orifice-type restrictor is proposed and its experimental model is established. Through theanalysis of the structure and flow rate of orifice-type restrictor and capillary restrictor, a long orifice-typerestrictor and a feasible experimental modeling method are presented by use of orifice plate instead of thewhole bearing. The flow rate of water film restrictors are tested under the aspect ratio of 4-10 and thepressure difference of 1.5-5.5 MPa and the experimental model of long orifice-type restrictor is established.The result shows that the restrictor of atypical structures needs to be modeled by experiment. The flowdiscipline of atypical restrictor is approximate to typical orifice-type restrictor and the throttling model is anearly turbulent model.
Keywords:
Hybrid BearingLong Orifice-type RestrictorExperimental ModelLiquid Nitrogen
Authors
F Ji
Xi’an Aerospace Propulsion Institute, Xi’an, China
Y.M Wang
School of Automation, Xi’an University of Posts and Telecommunications, Xi’an, China- State Key Laboratory for Strength and Vibration of Mechanical Structures , Xi’an Jiaotong University, China
J Tian
Xi’an Aerospace Propulsion Institute, Xi’an, China
Y.Y Zhang
Xi’an Aerospace Propulsion Institute, Xi’an, China