Evolution of the effective nozzle diameter in the buoyancy free development of turbulent jets with variable density

被引：0
|
作者：
J. C. Sautet
D. Stepowski
机构：
[1] UMR 6614 - CNRS CORIA,
[2] Université de Rouen F-76821 Mont Saint Aignan,undefined
[3] France,undefined
来源：
Experiments in Fluids | 1998年 / 25卷
关键词：
Variable Density; Initial Density; Density Ratio; Similarity Consideration; Nozzle Diameter;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
 Decay laws in the initial, non buoyant region of round, turbulent, variable density jets can be derived from dimensional similarity considerations. This paper presents the concept of normalized effective diameter. In the case of turbulent jets issuing into a coflow air stream (initial density ratio varying from 0.07 to 1), this quantity is experimentally derived from measurements of mean density and velocity and is found to follow a unique exponential decay. Results are also presented in terms of global force of the nozzle fluid.
引用
收藏
页码：280 / 282
页数：2
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