An experimental study on the mixing of inclined heated jets with a cold crossflow |
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Authors: | K S Chen Y R Cheng |
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Affiliation: | (1) National Sun Yat-San University, Kaohsiung, Taiwan, China |
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Abstract: | 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. |
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Keywords: | momentum flux ratio jet half-width jet penetration depth jet circulation depth |
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