文献类型：期刊文献

英文题名：Numerical analysis on the effect of bifurcation angle and inlet velocity on the distribution uniformity performance of consecutive bifurcating fluid flow distributors

作者：Cao, Jun[1];Kraut, Manfred[2];Dittmeyer, Roland[2];Zhang, Li[1];Xu, Hong[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Karlsruhe Inst Technol, Inst Microproc Engn, D-76344 Eggenstein Leopoldshafen, Germany

年份：2018

卷号：93

起止页码：60

外文期刊名：INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER

收录：;EI(收录号：20181204919351);WOS:【SCI-EXPANDED(收录号:WOS:000430518700007)】；

基金：This research work is supported by the Fundamental Research Funds for the Central Universities of China (No. WG1414044).

语种：英文

外文关键词：Consecutive fluid flow distributor; Bifurcation angle; Velocity uniformity; Numerical analysis

摘要：2-D numerical models have been used to analyze flow distribution performance in consecutive bifurcating fluid flow distributors according to constructal theory. The quantitative analysis of flow distribution uniformity performance for Y shape distributors with different bifurcation angles as well as inlet velocities are evaluated with water as working fluid, a hypothesis on the mechanism for the maldistribution is also presented. It is found that the flow distribution uniformity deteriorates with the increase of bifurcation angles from 15 degrees to 90 degrees, and the worst performance occurs when bifurcation angle is 90 degrees, where the largest pressure drop also appears. Furthermore, the flow distribution performance also decreases with increasing inlet velocity for the same distributor. Finally, an improvement to obtain more uniform flow uniformity for the T shape distributor is proposed by 'shrinking' the vertical channel width of each bifurcation. The conclusions obtained in this paper are potentially helpful for the design of fluid distributors for multi channel devices.