๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Turbulence measurements in a merged jet from two opposing curved wall jets

โœ Scribed by S. O. Park; H. S. Rew


Publisher
Springer
Year
1991
Tongue
English
Weight
937 KB
Volume
10
Category
Article
ISSN
0723-4864

No coin nor oath required. For personal study only.

โœฆ Synopsis


A two-dimensional flow generated by the interaction of two opposing, symmetric curved wall jets is investigated experimentally. The overall flow field can be divided into the curved wall jet region, the interaction region, and the merged jet region; thus, the results of the measurement are discussed to characterize these three distinct regions. For the curved wall jet region, the Reynolds stress distribution, the correlation coefficient, fiu v', and the ratio of normal stresses, v2/u 2, are presented and the effects of curvature and adverse pressure gradient on these distributions are discussed. The Reynolds stress distributions in the interaction region are analyzed in detail to illuminate the negative production of the turbulent kinetic energy. The developing jet in this region is found to accelerate owing to the very high pressure arising from the collision of the two wall jets. A counter-gradient shear flow situation is also observed in this interacting region. Measured data in the merged jet region are often compared to those of plane jets and the development of the merged jet is discussed in that respect. The spreading rate of the present merged jet is found to be much larger than that of the plane jets. To account for the larger spreading rate, the intermittency distribution is also investigated.


๐Ÿ“œ SIMILAR VOLUMES


Measurements in a heated turbulent wall
โœ S. Okamoto; M. M. Gibson ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Springer ๐ŸŒ English โš– 592 KB

The paper contains the results of extensive single-point hot-wire and resistance-thermometer measurements in a wall jet on a heated concave wall with an external free stream. It is found that the turbulence in the inner (wall) and outer layers is sensitive to the distortion produced by the curved wa

An experimental study on the two-dimensi
โœ E. Tanaka; Y. Inoue; S. Yamashita ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Springer ๐ŸŒ English โš– 650 KB

positions where the wall pressure has maximum and minimum values respectively penetration length of jet distance from the wall forward flow fraction yaw and pitch angles of flow direction (Fig. 4) velocity ratio, 2 = Ufl Uo density of the fluid nondimensional stream function 1