Simulation and Analysis of Internal Flow Field in Scroll Compressor with Circular Involute Profile
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摘要: 涡旋压缩机运行过程中工作腔内部流场状态参数难以通过试验测试获得。为此，以圆渐开线型线的动、静涡旋盘为对象，建立了带有动边界、径向与轴向间隙的动、静涡旋盘啮合的三维流场数值模型。利用CFD动网格技术设置流场边界、内部网格的变形，获得动、静涡旋盘啮合过程内部流场参数，并结合试验对模拟模型进行验证。结果表明：模拟结果与试验结果基本一致，获得了工作腔内流体流动压力和速度的动态分布规律，探索了压缩过程中腔内压力、速度、温度分布不均匀的原因。Abstract: The analysis of the flow field state in the working chamber during the operation of the scroll compressor is difficult to obtain through test and measurement. For this reason, this paper establishes a three-dimensional flow field numerical model with dynamic and static scrolls with dynamic boundary, radial and axial clearances, with the moving and static scrolls of the circular involute profile. The CFD dynamic mesh technology is used to set the flow field boundary and the internal mesh deformation to obtain the internal flow field parameters of the dynamic and static scroll meshing process, and the simulation results are verified by the test. The results show that the simulation results are basically consistent with the experimental results. The dynamic distribution of the pressure and velocity of the gas flow in the working chamber is obtained, the causes of uneven distribution of pressure, velocity and temperature in the compression process were explored.
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Key words:
- scroll compressor /
- transient flow field /
- dynamic grid /
- leakage /
- simulation /
- CFD /
- test /
- circular involute profile
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