【摘要】 以大连市某污泥处理厂为研究背景,以其厌氧发酵罐为研究对象,利用Fluent软件,采用RNG湍流模型、多相流中的混合模型对发酵罐内侧进式搅拌器对污泥与水固液两相的三维流动的影响进行数值模拟。通过模拟得到罐内速度场、固相浓度场的分布情况,分析对固相污泥的均匀分布产生影响的因素,对厌氧发酵过程中搅拌器的运行参数及结构参数的优化提供理论依据。更多还原

【Abstract】 On the background of a sludge treatment plant in Dalian,Use the commercial code FLUENT to simulate the influences of the side entry agitator on the solid-liquid two-phase flow in fermenter,which is built and implanted by RNG turbulence model and mixed model of multiphase flow. The simulation results show the distribution of sludge’s velocity and concentration fields in tank. Analysis is made on influencing factors of sludge’s uniform distribution,which provide theoretical basis for optimizing structure and operating parameters of stirrer.更多还原