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改进SPH方法在流动问题中的应用研究
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Abstract:
光滑粒子流体动力学(SPH)方法已被证明在模拟流动问题方面具有巨大的潜力。本文将采用基于弱可压缩假设的δ-SPH方法来对流动问题进行模拟，但是由于传统的插值方案精度不高，导致计算结果误差较大。本文中采用了改进的插值方案应用于顶盖驱动流算例，并将计算结果与传统方案的计算结果以及实验数据进行对比，结果证明了该新方案的改进效果。
The Smoothed Particle Hydrodynamics (SPH) method has proved to have great potentials in simulating flow problems. This paper will use the δ-SPH method based on the assumption of weak compressibility to simulate flow problems. Due to the low accuracy of conventional interpolation schemes, the calculation results have significant errors. In this paper, an improved interpolation scheme will be applied to the lid-driven flow case, and the calculation results will be compared with those of the conventional scheme and experimental data. The results proved the improvement effect of the new scheme.
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