基于计算流体力学对啤酒发酵罐的模拟  

Simulation of fermenters with different geometries by computational fluid dynamics

作　　者：刘瑞赛 安家彦[1] 董文勇 王越[1] 

机构地区：[1]大连工业大学生物工程学院,辽宁大连116034 [2]大连市第21中学,辽宁大连116000

出　　处：《中国酿造》2016年第4期136-139,共4页China Brewing

摘　　要：利用计算流体力学模拟技术对不同高径比的350 m^3锥形啤酒发酵罐进行数值模拟。模拟结果表明,在啤酒发酵冷却降温过程中,不同高径比的锥形发酵罐在相同条件下罐内温度分布情况明显不同,高径比为3∶1~4∶1时降温效果更好。不同发酵罐内的速度分布也存在明显差异,除了高径比为2:1的发酵罐存在一个整体的循环对流外,其他发酵罐内发酵液均以局部小涡流的状态存在。通过对不同高径比的发酵罐内的温度场和速度场的分析,可以为啤酒发酵罐的选型提供一定的理论依据。Computational fluid dynamics simulation technology was used to evaluate 350 m^3 cylindroconical beer fermenter with different height to diameter ratios. The simulation results showed that obvious temperature distribution difference existed in cylindroconical fermenter with different height to diameter ratios during cooling process of beer fermemtation. In fermenter with height to diameter ratio of 3：1-4：1, the cooling effect was better. In the aspect of velocity distribution, except that there was a whole cycle of convection in the H：D=2：1 fermenter, the fermentation broth in others existed in the state of local small vortices. Through the analysis on fermentation temperature field and velocity field, the results provided a theoretical basis for the selection of beer fermenter in beer industry production.

关 键 词：圆柱锥底发酵罐 高径比 计算流体力学:啤酒发酵 降温 

分 类 号：TS261.3[轻工技术与工程—发酵工程] TS262.5[轻工技术与工程—食品科学与工程]