The geometric parameters of surface aeration systems govern the process phenomena. The dissipation rate of turbulent kinetic energy (ε) and shear rate (γ) are the key process parameters for mixing in surface aerators. Present work by doing numerical computation by visimix? analyzes the effect of geometric parameters (impeller diameter, cross-sectional area of the tank, liquid height, width of the baffle, rotor blade length and immersion height) on ε and γ. Analysis has been done by making the geometric parameters non-dimensionalized through rotor diameter. With an increase in liquid height and baffled width, there is an increase in the case of energy dissipation and shear rate values. In the case of tank area and blade length, it is vice versa. Energy dissipation and shear rate are not affected by the variation in immersion height of the impeller.Keywords: energy dissipation; mixing; shear rate; surface aeratorDOI = 10.3329/cerb.v14i2.4910 Chemical Engineering Research Bulletin 14 (2010) 92-96
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机译：表面曝气系统的几何参数控制过程现象。湍动能的耗散率（ε）和剪切率（γ）是在表面曝气器中混合的关键工艺参数。通过visimix进行数值计算的当前工作？分析了几何参数（叶轮直径，槽的横截面积，液体高度，挡板的宽度，转子叶片的长度和浸入高度）对ε和γ的影响。通过使几何参数通过转子直径无量纲化来进行分析。随着液体高度和折流板宽度的增加，能量耗散和剪切速率值的增加。对于油箱面积和叶片长度，反之亦然。能耗和剪切速率不受叶轮浸入高度变化的影响。混合;剪切率表面曝气机DOI = 10.3329 / cerb.v14i2.4910 Chemical Engineering Research Bulletin 14（2010）92-96
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