TURBULENT WALL JET INTERACTION WITH A BACKWARD FACING STEP

机译：湍流墙射流与向后步距的相互作用

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Laser Doppler measurements were conducted in a turbulent wall jet which involves a recirculation zone due to the presence of a backward facing step. The initial development of the wall jet was controlled and results were compared to earlier measurements. Great attention was paid to the separation and reattachment processes and the influence of the inflow configuration on these. Reynolds stress u′v′ and intermittency factor (derived from flatness factor) were determined in order to get some idea of the flow structure and interaction process downstream of the step. It was found that by diffusion the turbulence in the external region definitely interacts with the near-wall turbulent structures in separating and reattaching flows.

机译：激光多普勒测量是在湍流壁射流中进行的，该射流由于存在向后的台阶而涉及一个再循环区域。壁射流的最初发展受到控制，并将结果与早期的测量结果进行了比较。非常重视分离和重新连接过程以及流入配置对这些过程的影响。确定雷诺应力u'v'和间歇因子（从平坦度因子得出），以便对该步骤下游的流动结构和相互作用过程有所了解。已经发现，通过扩散，外部区域中的湍流在分离和重新附着流中确实与近壁湍流结构相互作用。

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来源
《ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements(ETMM6); 20050523-25; Sardinia(IT)》|2005年|P.471-480|共10页
会议地点 Sardinia(IT)
作者
N. Nait Bouda; C. Rey; J.M. Rosant; T. Benabid;
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作者单位

Laboratoire de Mecanique des Fluides Theorique et Appliquee, Faculte de Physique U.S.T.H.B. BP 32, El Alia Bab Ezzouar 16111, Alger ALGERIE;

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原文格式 PDF
正文语种 eng
中图分类工程流体力学;
关键词
wall jet; turbulence; intermittence; separation; reattachment; backward facing step;

机译：壁面射流;湍流;间歇;分离;重新安装;向后迈步;

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1. PIV measurements in a turbulent wall jet over a backward-facing step in a three-dimensional, non-confined channel [J] . Nguyen Thien D., Souad Harmand Flow Measurement and Instrumentation . 2015,第Null期

机译：在三维无限制通道的向后步骤中，在湍流壁射流中进行PIV测量
2. Effects of a turbulent wall jet on heat transfer over a non-confined backward-facing step [J] . N. Lancial, F. Beaubert, S. Harmand, International Journal of Heat and Fluid Flow . 2013,第deca期

机译：湍流壁面射流对无限制后向台阶传热的影响
3. Experimental approach and numerical prediction of a turbulent wall jet over a backward facing step [J] . N. Nait Bouda, R. Schiestel, M. Amielh, International Journal of Heat and Fluid Flow . 2008,第4期

机译：后向台阶上湍流壁面射流的实验方法和数值预测
4. TURBULENT WALL JET INTERACTION WITH A BACKWARD FACING STEP [C] . N. Nait Bouda, C. Rey, J.M. Rosant, ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements(ETMM6) . 2005

机译：湍流壁射流相互作用与落后的步骤
5. The impingement of a turbulent wall jet onto a forward facing vertical step [D] . Langer, Douglas Christopher 2008

机译：湍流壁射流撞击向前的垂直台阶
6. Self-consistent triple decomposition of the turbulent flow over a backward-facing step under finite amplitude harmonic forcing [O] . E. Yim, P. Meliga, F. Gallaire -1

机译：有限振幅谐波强迫下后向台阶上湍流的自洽三重分解
7. An Experimental Investigation of a Turbulent Cylindrical Wall Jet Equipped with Front-Facing Step. Separation and Reattachment Properties of Wall Jet Flow. [O] . Yasuaki KOZATO, A.T.M.Rofiqul ISLAM, Shigeki IMAO, 1999

机译：湍流圆柱形壁射流配备了正面步骤的实验研究。壁射流的分离和重新定位性能。
8. Computation of turbulent flows over backward and forward-facing steps using a near-wall Reynolds stress model [R] . Ko, Sung HO 1993

机译：使用近壁雷诺应力模型计算向后和向前台阶上的湍流

TURBULENT WALL JET INTERACTION WITH A BACKWARD FACING STEP

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