文献类型：期刊文献

英文题名：An analytical solution for incompressible flow through parallel multiple jets

作者：Wang, Junye[1]; Priestman, Geoffrey H.[1]; Wu, Dongdi[2]

机构：[1]Univ Sheffield, Dept Chem & Proc Engn, Sheffield S1 3JD, S Yorkshire, England;[2]E China Univ Sci & Technol, Sch Mech Engn, Shanghai 200237, Peoples R China

年份：2001

卷号：123

期号：2

起止页码：407

外文期刊名：JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME

收录：;EI(收录号：20122815226783);WOS:【SCI-EXPANDED(收录号:WOS:000169370800025)】；

语种：英文

外文关键词：multiple jets; turbulent jet; jet mixing; process intensification

摘要：A theoretical model of multiple jet flow is introduced based on the thin shear layer theory. The analytical solution has been obtained by using Prandtl's mixing length hypothesis. The results show that along the streamline direction, the axial velocity decreases gradually like a single jet and in the transverse direction, the velocity distribution changes as a cosinoidal function, in which the velocity amplitude decreases with increasing x, gradually approaching a flat profile. It is also shown that the distance at which the individual jets begin to merge increases with increasing pitch, s. For the special cases when the pitch, s is zero, the row of multiple jets becomes equivalent to a single jet. Finally, the predictive results are found to agree well with experimental data in the fully developed turbulent flow region.