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空化算法
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  cavitation algorithm
     Based on the couple stress fluid model and Elrod’s cavitation algorithm, a numerical model of the thermo-hydrodynamic lubrication of journal bearings is built up. The midified Reynolds equation and the midified energy equation of oil film together with the heat transfer equation of the bush are solved. The effects of couple stress on the thermohydrodynamic performance of a finite journal bearing are investigated.
     基于应力偶理论和Elrod空化算法建立了滑动轴承热流体动力润滑数学模型,数值求解了应力偶流体的Reynolds方程、油膜能量方程及轴瓦热传导方程,考察了应力偶效应对滑动轴承热流体动力润滑性能产生的影响。
短句来源
  相似匹配句对
     The algorithm is an extension of the two-valued cover-most algorithm proposed by M. C.
     该算法是M. C.
短句来源
     Attached Cavitation Model and Algorithms
     附着空化流动的模型和算法
短句来源
     H-Algorithm and its Validity
     H算法及确实性
短句来源
     Stimulated Brillouin Scattering and Ultrasonic Cavitation
     受激布里渊散射和超声空化
短句来源
     Hydrodynamic Cavitation and Its Applications
     水力空化及应用
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Based on the couple stress fluid model and Elrod’s cavitation algorithm, a numerical model of the thermo-hydrodynamic lubrication of journal bearings is built up. The midified Reynolds equation and the midified energy equation of oil film together with the heat transfer equation of the bush are solved. The effects of couple stress on the thermohydrodynamic performance of a finite journal bearing are investigated. It is found that the couple stress fluids, compared with the Newtonian fluids, not only produce...

Based on the couple stress fluid model and Elrod’s cavitation algorithm, a numerical model of the thermo-hydrodynamic lubrication of journal bearings is built up. The midified Reynolds equation and the midified energy equation of oil film together with the heat transfer equation of the bush are solved. The effects of couple stress on the thermohydrodynamic performance of a finite journal bearing are investigated. It is found that the couple stress fluids, compared with the Newtonian fluids, not only produce an obvious increase in load capacity and a decrease in friction coefficient, but also yield a change in the side leakage flow and the temperature field of oil and bush.

基于应力偶理论和Elrod空化算法建立了滑动轴承热流体动力润滑数学模型,数值求解了应力偶流体的Reynolds方程、油膜能量方程及轴瓦热传导方程,考察了应力偶效应对滑动轴承热流体动力润滑性能产生的影响。结果表明:应力偶流体明显地提高了油膜压力,降低了轴承摩擦系数,同时也使端泄流量和轴承的温度场有所改变。

A theoretical analysis model of film hydrodynamic pressure between the two faces was developed for a laser surface textured mechanical seal(LST-MS).Finite element method was used to solve Reynolds equation respectively under the different cavitation boundary conditions of Half-Sommerfeld,Reynolds and Floberg or JFO.The effects of micro-pore geometrical parameters and operating conditions on dimensionless average dynamic pressure between the two faces under the different cavitation boundary conditions were studied.The...

A theoretical analysis model of film hydrodynamic pressure between the two faces was developed for a laser surface textured mechanical seal(LST-MS).Finite element method was used to solve Reynolds equation respectively under the different cavitation boundary conditions of Half-Sommerfeld,Reynolds and Floberg or JFO.The effects of micro-pore geometrical parameters and operating conditions on dimensionless average dynamic pressure between the two faces under the different cavitation boundary conditions were studied.The results show that the prediction accuracies are nearly the same when the boundary conditions of Reynolds and JFO are used,but the former predicts more faster than the latter.The prediction error is very large when Half-Sommerfeld boundary condition is used.So it is suggested that the Reynolds cavitation boundary condition is generally used for numerically solving Reynolds equation controlling the film pressure of a LST-MS,otherwise the JFO boundary condition is used when the effects of face temperature and/or phase states of the fluid film between the two faces are considered.

建立了激光加工多孔端面机械密封(LST-MS)的动压分析理论模型,在Half-Sommerfeld、Reynolds和JFO等3种不同空化边界条件下应用有限元法求解了端面流体膜压的Reynolds控制方程,研究了微孔结构参数及操作条件对端面无量纲平均动压的影响规律,并对上述空化算法的计算速度和精度进行了比较。结果表明,在一般情况下,采用Reynolds和JFO空化边界条件具有十分接近的预测精度,但是前者的预测速度明显优于后者,而采用Half-Sommerfeld空化边界条件预测精度则很差,建议此时采用Reynolds空化边界条件;对于不能采用Reynolds空化边界条件的情况,则建议采用JFO空化边界条件进行预测分析。

 
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