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为了深入了解气固两相湍流中气相脉动的非线性特征,用相平面不变量法对竖直方管内气固两相流场的气相瞬时速度的实验数据和运用随机分布方法得到的模拟数据进行对比研究。结果表明:流动行为相似的流场有着相似的相平面不变量曲线,流动行为差异较大的流场相平面不变量曲线呈现不同的趋势;在模拟数据和实验数据的统计分布基本相同时,采用不考虑变量相关性随机分布的模拟数据和实验数据的相平面不变量曲线存在非常大的差异,而在考虑变量相关性随机分布时符合较好,但在曲线两端存在一定的差异。
In order to understand the nonlinear characteristics of gas-phase pulsation in gas-solid two-phase turbulence, the experimental data of gas-phase transient velocities in gas-solid two-phase flow field in vertical square tube and the simulation data obtained by stochastic distribution method Comparative Study. The results show that the flow field with similar flow behavior has similar phase-invariant curves, and the invariant curves of phase-plane flow regimes with large differences in flow behavior show different trends. When the statistical distributions of simulation data and experimental data are basically the same, There is a very large difference between phase-plane invariant curves of simulated data and experimental data that do not consider the random dependence of variables’ correlations, but they are good when considering the random distribution of variable relativities. However, there are some discrepancies at both ends of the curve.