The effect of the impeller designs and impeller clearance level (C/T) on power consumption, mixing time and air entrainment point in a single liquid phase under turbulent conditions (Re > 10⁴) were investigated. Different impeller designs including conventional and new designs, were used to consider both axial and radial flow impellers. The electric conductivity method, suspended motor system and observation method were employed to determine the mixing time, the power consumption and the air entrainment point, respectively. The reduction in the impeller clearance level form T/3 to T/6 resulted in a decrease in power number values for up-flow pumping impellers while it was increased for down-flow pumping. The same trend was observed for the mixing time results. Moreover, axial flow impellers and specially HE3 are preferable for higher agitation speeds due to the less air entrainment. The results verified that the axial flow impellers and specifically down-flow impellers are more efficient than the radial flow impellers. ANFIS-Fuzzy C–means (ANFIS–FcM) and nonlinear regression were used to develop models to predict the mixing time based on the energy dissipation rate and clearance. The results verified that the model predictions successfully fit the experimental mixing time data.

叶轮设计和叶轮间隙水平（C / T）对湍流条件下单一液相中的功率消耗，混合时间和空气夹带点的影响（Re> 10 ⁴）进行了调查。包括传统设计和新设计的不同叶轮设计都被用来同时考虑轴向和径向流叶轮。分别采用电导率法，悬浮电动机系统和观测法确定混合时间，能耗和空气夹带点。从T / 3到T / 6的叶轮间隙水平减小导致上流泵送叶轮的功率值减小，而下流泵送则增大。对于混合时间结果，观察到相同的趋势。此外，由于较少的空气夹带，对于较高的搅拌速度，优选轴流式叶轮，特别是HE3。结果证明，轴向流式叶轮，特别是向下流式叶轮比径向流式叶轮效率更高。使用ANFIS-模糊C均值（ANFIS-FcM）和非线性回归来开发模型，以基于能量耗散率和清除率来预测混合时间。结果证明模型预测成功地拟合了实验混合时间数据。