The interaction of two opposing, asymmetric curved wall jets

Rew, H. S.; Park, Seung O

doi:10.1007/bf00187364

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…It is seen that the approximate similarity has been already achieved at about 0 = 120 ~ Also contained in Fig. 3 are the velocity profiles of the plane wall jets (Irwin 1973;Kind and Suthanthiran 1973), and those of the curved wall jets (Rew and Park 1988;Wilson and Goldstein 1976). The velocity profiles of the present case are seen to be in good accord with the others.…”

Section: The Characteristics Of the Curved Wall Jet Before The Interasupporting

confidence: 78%

“…An understanding of the physical process about the flow is important in the sense that it constitutes a typical problem of complex shear layer interaction and coalescence. Previous studies on the wall jet-waU jet interaction (Gilbert 1988;Kind and Suthanthiran 1973;Lee and Chung 1983;Rew and Park 1988) revealed that the velocity profiles of the merged jet were very similar to those of a conventional plane jet and that the merged jet spread more rapidly than the conventional one.…”

Section: Introductionmentioning

confidence: 86%

“…2). In our earlier study (Rew and Park 1988), we found that the adverse pressure --Irwin (1973) gradient in the curved wall jet significantly increased the turbulence intensity without changing the normalized streamwise velocity profiles. The present results confirm that observation.…”

Section: The Characteristics Of the Curved Wall Jet Before The Interamentioning

confidence: 96%

“…The exit velocity at each issuing slot was 29.2 m/sec, which gave the slot Reynolds number of 2.1 x 104. More details about the test rig can be found in Rew and Park (1988). The mean velocity and Reynolds stress measurements were carried out using a DANTEC 55M CTA system equipped with a DISA 55P61 X-probe (5 lam tungsten wire).…”

Section: Experimental Set Up and Measurementsmentioning

confidence: 99%

“…In our earlier study of the interaction of two opposing curved wall jets (Rew and Park 1988), global flow characteristics concerning the curved wall jet development, the interaction of the two curved wall jets including the directional properties, and the evolution' of a single free jet were investigated. In that study, the mean velocity and the turbulence intensity profiles were intensively measured with an I-type hot wire.…”

Section: Introductionmentioning

confidence: 99%

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

Park

Rew

1991

Experiments in Fluids

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Abstract. 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.

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