CAJ | 학술논문

使用计算流体力学软件FLUENT (V6.3)对自行设计的开槽式翼型搅拌桨-CBY-H桨搅拌釜内单相体系的流动性能进行了数值研究，采用多重参考系法(MRF)和RNG k-ε湍流模型模拟搅拌釜内液体的流动情况，并将研究结果与标准的CBY桨的轴流特性进行了对比。结果表明，CBY-H桨可提高流体轴流循环性能，在桨叶下方和桨叶区流体的轴向速度比CBY桨大，高速运动的流体区域覆盖范围更广，釜内速度分布更均匀。同时CBY-H桨消耗的功率低于CBY桨，节能18.4%。论文还进行了传热实验研究，发现CBY-H桨的釜内对流传热系数略大于CBY桨，获得了传热系数Nu的关联式。
사용계산류체역학연건FLUENT (V6.3)대자행설계적개조식익형교반장-CBY-H장교반부내단상체계적류동성능진행료수치연구，채용다중삼고계법(MRF)화RNG k-ε단류모형모의교반부내액체적류동정황，병장연구결과여표준적CBY장적축류특성진행료대비。결과표명，CBY-H장가제고류체축류순배성능，재장협하방화장협구류체적축향속도비CBY장대，고속운동적류체구역복개범위경엄，부내속도분포경균균。동시CBY-H장소모적공솔저우CBY장，절능18.4%。논문환진행료전열실험연구，발현CBY-H장적부내대류전열계수략대우CBY장，획득료전열계수Nu적관련식。
Flow performance of a single-phase system in a stirred tank equipped with a grooved hydrofoil impeller (CBY-H) was studied with fluid dynamics software FLUENT (V6.3). A multiple reference frame (MRF) method and the RNG k-εturbulence model were chosen to simulate steady liquid flow performance and results were compared with that of a standard CBY impeller. Research shows that the CBY-H impeller improves liquid axial-flow performance, and the axial velocity around and below the blade area is larger than that of the standard CBY impeller. The study using the CBY-H impeller shows that high flow-speed liquid covers a wider area with more uniform velocity distribution. Moreover, the CBY-H impeller shows 18.4%less energy consumption and the convective heat transfer coefficient of the stirred tank with the CBY-H impeller is slightly higher than that of the standard CBY impeller. The correlation between Nu and Re was also obtained.