当前位置: X-MOL 学术Int. Commun. Heat Mass Transf. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Soluble gaseous pollutants transport inside ternary liquid micro-cylinders in an equilateral triangular configuration at low Reynolds number
International Communications in Heat and Mass Transfer ( IF 7 ) Pub Date : 2021-03-03 , DOI: 10.1016/j.icheatmasstransfer.2021.105214
Kai Dong , Zhentao Wang , Shiqi Yang , Bin Li , Junfeng Wang

Gaseous pollutants transport inside liquid micro-cylinders with internal circulations in an equilateral triangular configuration is simulated to study the effects of varied gap-ratio (1 ≤ G/R ≤ 4), Reynolds (Re) number (30 ≤ Re ≤ 160) and incident angle (α = , 30° and 60°) on the absorption in a uniform gaseous stream. The shear stress fluctuates with spatial position on the interface due to unsteady flow separation and attachment. Furthermore, the ‘primary’ and ‘secondary’ vortexes inside liquid micro-cylinders are induced, respectively, where soluble gaseous pollutants are quickly entrained and partially blocked into liquid micro-cylinders by ‘inflow’ and ‘outflow’ type circulations pair at the stern regions, respectively. For incident angles α = 0° and α = 60°, the symmetric flow forms because of the symmetric configuration of liquid micro-cylinders, while for incident angle α = 30°, the asymmetric flow appears due to asymmetric arrangement. The ‘primary’ (large clockwise) and ‘secondary’ (small counterclockwise) vortexes usually depending on Re number and G/R facilitate gaseous pollutants intrusion into liquid micro-cylinders at separation point. The sensitivity of gap-ratio is presented based on the transient accumulation (mso2′), which characterizes the exact influence of G/R. The larger gap-ratio facilitates faster saturation of sulfur dioxide inside liquid micro-cylinders because of fully developed internal vortexes. As Re number increasing, the gaseous pollutants transport could be significantly enhanced because internal vortexes become gradually stronger. In addition, the incident angle has no significant effect on pollutants transport inside liquid micro-cylinders because of slightly direct interaction between separated shear layers and wakes.



中文翻译:

可溶性气态污染物在低雷诺数下以等边三角形构型在三元液体微圆柱体内传输

液体微柱在内部循环的内部气体污染物运输等边三角形的结构进行仿真来研究多样间隙比率(1≤的效果 ģ / ř  ≤4),雷诺()号(30≤ 重新 ≤160)和入射角(α  =  ,30°和60°)在均匀气流中吸收。由于不稳定的流动分离和附着,剪切应力随着界面上的空间位置而波动。此外,分别在液态微型气缸内产生“一次”和“二次”涡流,在其中,可溶性气态污染物迅速通过尾部的“流入”和“流出”型循环对被夹带并部分阻塞到液态微型气缸中。地区。对于入射角α  =  0 °α  =  60 °,由于液体微圆柱体的对称配置而形成对称流,而对于入射角α  =  30 °,由于不对称排列而出现不对称流动。通常取决于Re数和G / R的“主要”(顺时针大)和“次要”(逆时针小)涡流促进了气态污染物在分离点侵入液体微圆柱体。基于瞬态累积(m so 2 ')给出了间隙比的灵敏度,它表征了G / R的确切影响。由于内部涡流充分发展,较大的间隙比可促进液态微圆柱体内的二氧化硫更快地饱和。作为R随着数量的增加,由于内部涡流逐渐变强,气态污染物的运移可能会大大增强。另外,由于分离的剪切层和尾流之间的轻微直接相互作用,入射角对液体微圆柱体内的污染物传输没有显着影响。

更新日期:2021-03-04
down
wechat
bug