An anisotropic drop breakage model is applied to CFD–PBM simulations of turbulent emulsification in a high–pressure homogeniser. We compare the exponent of Sauter mean diameter – pressure drop correlations with published experimental results and with exponents obtained using existing drop breakage models. Its theoretical value assuming homogeneous isotropic turbulence is $-0.6$, while experiments have shown exponents of smaller magnitude. A breakage frequency model using the full spectrum of isotropic turbulence is found to produce a value of the exponent near $-0.6$. Our newly developed anisotropic breakage model predicts an exponent of smaller magnitude, closer to experiments. Breakage frequency based on isotropic turbulence exhibits non–monotonic behaviour (by predicting a maximum value for a certain drop size); the effect of turbulence anisotropy is to reduce non–monotonicity. It is shown that this reduction in non–monotonicity drives the decrease in the magnitude of the exponent.

在高压均质机中，将各向异性液滴破碎模型应用于湍流乳化的CFD–PBM模拟中。我们将Sauter平均直径–压降相关性的指数与已发表的实验结果以及使用现有液滴破裂模型获得的指数进行比较。假设均质各向同性湍流的理论值是$--0.6$，而实验表明指数幅度较小。发现使用各向同性湍流全谱的破损频率模型可产生近似的指数值$--0.6$。我们新开发的各向异性断裂模型预测的指数较小，更接近实验。基于各向同性湍流的破损频率表现出非单调性（通过预测特定液滴尺寸的最大值）。湍流各向异性的作用是减少非单调性。结果表明，非单调性的下降促使指数幅度减小。