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首页> 外文期刊>Journal of Computational Physics >A new particle method for simulating breakup of liquid jets
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A new particle method for simulating breakup of liquid jets

机译:模拟液体射流破裂的新粒子方法

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摘要

A corrected smoothed particle hydrodynamics (CSPH) method for simulating two-phase flows including surface tension is presented. The effects of the instability in the compressional regime and particle deficiency are suppressed by adopting a new smoothing kernel and its gradient corrections. The insensitivity to the compressional instability of the adopted method is confirmed by numerical tests. The method is validated and calibrated through a series of standard numerical tests and showed quantitative agreements. The method is extended to two-dimensional jet breakup problems and provided good comparison to the theoretical and experimental results. In particular, the numerical model exhibits the transition from the jetting to dripping when the Weber number is close to its theoretical critical value.
机译:提出了一种修正的平滑粒子流体动力学(CSPH)方法,用于模拟包括表面张力的两相流。通过采用新的平滑核及其梯度校正,可以抑制压缩状态下的不稳定性和颗粒不足的影响。通过数值试验证实了所采用方法对压缩不稳定性的不敏感性。该方法通过一系列标准数值测试进行了验证和校准,并显示出定量的一致性。该方法扩展到二维射流破裂问题,并与理论和实验结果进行了很好的比较。特别地,当韦伯数接近其理论临界值时,数值模型显示出从喷射到滴落的过渡。

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