摘要
为了对密封腔内流体的温度和流场分布有直观的了解,运用FLUENT软件对密封腔内流场的温度和压力进行了数值模拟计算.计算以N-S方程为基础,采用标准k-ε方程的湍流模型,对密封运转稳定状态下,密封环温度场及密封腔内流场的温度、速度、压力分布进行了分析计算.结果表明,密封腔内流体温度变化不大,在壁面处温度有所变化;流体在壁面处的流速比其在腔体内的速度小,但流速基本是线性连续的;轴上压强分布基本平衡,但密封腔截面面积变化较大时,将造成压强局部突变.分析计算的结果与试验测试的结果,两者的误差在6%~17.5%之间,基本吻合,表明数值模拟可以对难以观察的流场内变化进行可视化计算.
In oder to understand the distribution of temperature and pressure in a mechanical seal cavity, Fluent software was used to carry out a numerical simulation on temperature and pressure. Based on Navier- Stokes equations and the standard turbulent model, the temperature and flow fields for a mechanical seal ring were simulated. The results prove that the temperature in the mechanical seal cavity has little change and the temperature on the mechanical seal wall has greater change. The velocity near the meachanical seal wall is slower than that in cavity. The velocity distribution is linear and continual. The plot of pressure is nearly balanced at axis. There is a partical pressure change when the area of the cross section of the mechanical seal cavity changes suddenly. By comparing the calculated results with that from experiment, the error range is about 6% to 17.5%, which is coincident with the actual situation. It shows that numerical simulation can be carried out on the visual calculation for the invisible change in the flow field.
出处
《排灌机械》
EI
2009年第3期200-203,共4页
Drainage and Irrigation Machinery
基金
四川理工学院科研项目(2006ZR010)
关键词
机械密封
数值模拟
温度
压力
FLUENT
mechanical seal
numerical simulation
temperature
pressure
FLUENT
