An Experimental Study on the Mixing of Inclined Heated Jets with a Cold Crossflow  

作　　者：K.S.Chen Y.R.Cheng 

机构地区：[1]National Sun Yat-San University

出　　处：《Journal of Thermal Science》1993年第4期237-247,共11页热科学学报（英文版）

基　　金：Partial support of this work by the Science and Technology Coordination Council in Defence in Taiwan under Grants CS 79-0210-D110-03

摘　　要：An experimental study is presented for the mixing of one-and dual-line heated jets injected at 60° angle with x-axis into a cold crossflow in a rectangular channel.Measurements of the mean temperature,velocity,and turbulence intensity together with the flow visualization were performed.Self-similar forms for the dimensionless vertical temperature profiles were found.Parametric variations characterizing the mixing processes of the temperature and velocity fields were examined and correlated in terms of the momentum flux ratio and downstream distance.Results show that both the thermal and velocity penetration depths increase with increasing momentum flux ratio and downstream distance.The turbulence intensity is strong within the region of jet half-width,and the maximum value occurs at a point close to the jet velocity trajectory.

关 键 词：momentum flux ratio jet half-width jet penetration depth jet circulation depth 

分 类 号：TK413.84[动力工程及工程热物理—动力机械及工程]