论文部分内容阅读
基于FLUENT采用三维双精度标准k-ε粘性湍流模型,仿真了供气压强为6、7、8、9和10atm时的同孔径等间距孔式静压空气平面轴承节流器4×4阵列,得到了五种压强下阵列多节流器耦合后的质量流量、气膜平均压强等关键性能参数及气膜静压强分布、速度分布等。仿真数据表明:总质量流量与供气压强成比例;增大供气压强可提高气浮垫的平均气膜压强即承载能力。从气膜压强和速度关于位置坐标的累积分布得到了不同供气压强下阵列气膜区压强、气体速度的耦合关系。仿真结果能指导静压空气平面轴承的优化设计,为辨识多节流器阵列气膜压强和气体速度分布等理论模型提供了仿真数据。
Based on FLUENT, a 3-D double-precision standard k-ε viscous turbulence model was used to simulate a 4 × 4 array of throttling devices with the same aperture and equal spacing at the same pitch and with a hole diameter of 7, 7, 8, 9 and 10 atm. The key performance parameters such as the mass flow rate, the average pressure of the gas film and the static pressure distribution and the velocity distribution of the gas film under the five kinds of pressures are obtained. The simulation results show that the total mass flow rate is proportional to the pressure of the gas supply. Increasing the pressure of the gas supply can increase the average gas pressure of the gas-filled cushion, ie, the carrying capacity. From the cumulative distribution of pressure and velocity on the position coordinates, the coupling relationship between the gas pressure and gas pressure in the gas field under different gas pressures was obtained. The simulation results can guide the optimization design of the hydrostatic air bearing, and provide the simulation data for the identification of the theoretical model such as the gas film pressure and the gas velocity distribution of the multi-throttle array.