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

An Experimental Study on the Mixing of Inclined Heated Jets with a Cold Crossflow
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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.
出处 《Journal of Thermal Science》 SCIE EI CAS CSCD 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
关键词 momentum flux ratio jet half-width jet penetration depth jet circulation depth 热喷嘴 动量通量比 交叉气流
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