TY - JOUR
T1 - Characteristics of micro-gas journal bearings based on kinetic theory
AU - Rao, Xiang Jin
AU - Chang, Kuo Ming
AU - Li, Wang Long
N1 - Funding Information:
This research was supported by the National Science Council, Taiwan , Project no. NSC 98-2221-E-006-061 .
PY - 2011/3
Y1 - 2011/3
N2 - According to Poiseuille and Couette flow rate correctors, Q̃p(D,α1,α2) and Q̃C(D,α1,α2), the modified molecular gas lubrication (MMGL) equation is applied for the analysis of micro-gas journal bearings. The effects of gas rarefaction are considered for arbitrary inverse Knudsen numbers (D) and non-symmetric accommodation coefficients (AC) conditions (α1≠α2). The combined effects of Q̃p(D,α1,α2) and Q̃C(D,α1, α2) on the performance of micro-gas journal bearings are firstly discussed. The results show that the surface property (AC) of moving surface affects the bearing performance more significantly than that of stationary surface does. The load carrying capacity increases as the AC of moving surface increases or the inverse Knudsen number increases.
AB - According to Poiseuille and Couette flow rate correctors, Q̃p(D,α1,α2) and Q̃C(D,α1,α2), the modified molecular gas lubrication (MMGL) equation is applied for the analysis of micro-gas journal bearings. The effects of gas rarefaction are considered for arbitrary inverse Knudsen numbers (D) and non-symmetric accommodation coefficients (AC) conditions (α1≠α2). The combined effects of Q̃p(D,α1,α2) and Q̃C(D,α1, α2) on the performance of micro-gas journal bearings are firstly discussed. The results show that the surface property (AC) of moving surface affects the bearing performance more significantly than that of stationary surface does. The load carrying capacity increases as the AC of moving surface increases or the inverse Knudsen number increases.
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U2 - 10.1016/j.triboint.2010.10.019
DO - 10.1016/j.triboint.2010.10.019
M3 - Article
AN - SCOPUS:78650517023
SN - 0301-679X
VL - 44
SP - 241
EP - 247
JO - Tribology International
JF - Tribology International
IS - 3
ER -