CAJ | 학술논문

针对一种新型T 型搅拌器,采用计算流体动力学( CFD)软件FLUENT ,利用多重参考系法( MRF)对其的流场进行数值模拟：首先分析对比了T 型搅拌器与开启式涡轮搅拌器和圆盘涡轮式搅拌器的湍流强度、搅拌槽内流场特性、时均速度分布和搅拌功率,结果表明T 型搅拌器的流场分布较好,能够达到更好的混合效果；通过分析T型搅拌器在不同安装高度下的搅拌特性,确定了指定搅拌槽尺寸情况下最佳安装高度为150 mm；最后计算了不同叶片数T 型搅拌器的湍流强度分布和搅拌功率,得知槽内搅拌功率随着叶片数的增加而增大,3叶片数的T 型搅拌器具有最优的湍流强度分布。本研究对分析和开发类似新型搅拌器有重要的参考意义。
침대일충신형T 형교반기,채용계산류체동역학( CFD)연건FLUENT ,이용다중삼고계법( MRF)대기적류장진행수치모의：수선분석대비료T 형교반기여개계식와륜교반기화원반와륜식교반기적단류강도、교반조내류장특성、시균속도분포화교반공솔,결과표명T 형교반기적류장분포교호,능구체도경호적혼합효과；통과분석T형교반기재불동안장고도하적교반특성,학정료지정교반조척촌정황하최가안장고도위150 mm；최후계산료불동협편수T 형교반기적단류강도분포화교반공솔,득지조내교반공솔수착협편수적증가이증대,3협편수적T 형교반기구유최우적단류강도분포。본연구대분석화개발유사신형교반기유중요적삼고의의。
The flow field of a new T2shaped stirrer was simulated using the multiple reference frame (MRF) method in the com2 putationalfluiddynamics(CFD)softwareFLUENT.Theintensityofturbulence,flowfieldcharacteristics,meanvelocitydistri2 bution, and mixing pow er of the T2shaped stirrer, open turbine stirrer, and rushton turbine stirrer w ere analyzed and com pared, and the results suggested that the T2shaped stirrer has a better flow field distribution to achieve better mixing effects. T he mix2 ing characteristicsofT2shapedstirrerwithdifferentmountingheightswereanalyzed,andthebestmountingheightwasobtained as 150mm under the condition of fixed stirred tank size. The turbulence intensity and mixing pow er of the T2shaped stirrer with different numbers of blades were investigated, which showed that the mixing power increases with the increasing number of bladesandtheT2shapedstirrerwith3bladeshasthebestturbulenceintensitydistribution.Theresearchcanprovideanimpor2 tant basis for the analysis and development of new stirrer.