Achieving a resource-protecting and environment friendly provide chain whereas following economic development has consistently been the target of countries across the world. Bleaching of soybean, canola, olive, sunflower and palm oils by ultrasonic horn reactor as a green process was simulated by computational fluid dynamics (CFD) to determine the effect of viscosity, amplitude (180 and 360 W), frequency (25 and 40 kHz) and temperature (35 and 65 °C). Multiphase, unsteady and axisymmetric modeling of the process examined led to the determination of shear rates. In addition, the viscosity power law model was applied to predict the vegetable oils’ viscosity with high accuracy. Besides that, the fatty acid composition of vegetable oils was measured by gas chromatography. ΣPUFA/(ΣMUFA + ΣSFA) content was highest for soybean (1.39) and lowest for palm oil (0.07). A positive relation was found between the color of bleached oil and ultrasound frequency and viscosity. It was found that the flow shear rate reduced with increasing the temperature and power of sonication. The creation of regions with a high velocity gradient and, consequently, elevated shear rates (especially near the horn tips or at the corners) affected oil viscosity. Sunflower oil behaved as a shear thinning fluid, except at moderate shear rates where Newtonian properties were observed. Rheological characteristics of palm oil were similar to those of olive oil as a shear thinning fluid. Semi-empirical correlations are proposed to determine the viscosity of oil as a function of its shear rate for this green process.

实现资源保护和环境友好的供应链，而跟随经济发展一直是世界各国的目标。通过计算流体力学（CFD）模拟了超声角反应器对大豆，低芥酸菜子油，橄榄油，葵花子油和棕榈油进行的绿色工艺漂白，以确定粘度，振幅（180和360 W），频率（25和40 kHz）的影响）和温度（35和65°C）。对所研究过程的多相，非稳态和轴对称建模导致确定剪切速率。另外，采用黏度幂律模型对植物油的黏度进行了高精度预测。除此之外，通过气相色谱法测量植物油的脂肪酸组成。大豆的ΣPUFA/（ΣMUFA+ΣSFA）含量最高（1。39），棕榈油最低（0.07）。发现漂白油的颜色与超声频率和粘度之间呈正相关。已经发现，流动剪切速率随着超声处理的温度和功率的增加而降低。产生具有高速度梯度的区域并因此提高剪切速率（尤其是靠近喇叭尖端或拐角处）会影响油的粘度。葵花籽油表现为剪切稀化流体，除了在中等剪切速率下观察到牛顿特性外。棕榈油的流变特性与用作剪切稀化液的橄榄油的流变特性相似。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。发现漂白油的颜色与超声频率和粘度之间呈正相关。已经发现，流动剪切速率随着超声处理的温度和功率的增加而降低。产生具有高速度梯度的区域并因此提高剪切速率（尤其是靠近喇叭尖或拐角处）会影响油的粘度。葵花籽油表现为剪切稀化流体，除了在中等剪切速率下观察到牛顿特性外。棕榈油的流变特性类似于作为剪切稀化液的橄榄油的流变特性。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。发现漂白油的颜色与超声频率和粘度之间呈正相关。已经发现，流动剪切速率随着超声处理的温度和功率的增加而降低。产生具有高速度梯度的区域并因此提高剪切速率（尤其是靠近喇叭尖端或拐角处）会影响油的粘度。葵花籽油表现为剪切稀化流体，除了在中等剪切速率下观察到牛顿特性外。棕榈油的流变特性与作为剪切稀化液的橄榄油的流变特性相似。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。产生具有高速度梯度的区域并因此提高剪切速率（尤其是靠近喇叭尖端或拐角处）会影响油的粘度。葵花籽油表现为剪切稀化流体，除了在中等剪切速率下观察到牛顿特性外。棕榈油的流变特性与作为剪切稀化液的橄榄油的流变特性相似。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。产生具有高速度梯度的区域并因此提高剪切速率（尤其是靠近喇叭尖端或拐角处）会影响油的粘度。葵花籽油表现为剪切稀化流体，除了在中等剪切速率下观察到牛顿特性外。棕榈油的流变特性与作为剪切稀化液的橄榄油的流变特性相似。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。棕榈油的流变特性与作为剪切稀化液的橄榄油的流变特性相似。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。棕榈油的流变特性与作为剪切稀化液的橄榄油的流变特性相似。提出了半经验相关性来确定油的粘度作为该绿色过程的剪切速率的函数。