Flow Analysis of Static Pressure Turntable Considering Time-varying Characteristics of Oil Rheology and Depth Characteristic Size
The non-Newtonian behavior and changes in rheological properties over time of hydraulic oil used in the turntable will affect the flow in the turntable and load-bearing capacity.A double ring static pressure turntable is chosen as the research object,a virtual external force term LBM method was proposed for the rheological and time-varying characteristics of oil.The theoretical solution of Poiseuille flow was used to verify the proposed method.According to the simulation analysis,it was found that the side oil inlet of the double ring turntable can effectively increase the pressure in the center groove and improve the bearing capacity.The time-varying characteristics of oil rheology and the depth characteristic size of the turntable are two important factors.Compared to the velocity distribution,the depth of the sealing edge and the depth of the oil cavity have a more significant impact on the bearing capacity.The viscosity of the oil increases over time,the flow of the oil slows down,its speed decreases,and its load-bearing capacity weakens.Therefore,it is recommended to regularly replace the hydraulic oil to ensure the normal operation of the turntable.
rheological and time-varying characteristicsnon-newtonian behaviorload-bearing capacitydepth characteristic size
万方数据
维普
