An experimental study was carried on the temperature and velocity distributions of two dimensional jet between two different temperature atmosphere which has been applied to the design of "Air curtain". Experiments were performed for the cases of two different exit velocities of the jet with several temperature conditions. Turbulent velocity fluctuations, as well as the mean temperature distributions and mean velocity distributions, were measured. The results of experiments were compared with the conventional two dimensional heated jet whose ambient temperature condition is symmetry.
For the plane heated jet with symmetrical temperature condition, mean velocity and mean temperature distributions approaches self preserving condition at X=30D, but turbulence quantities don't show self preserving in our experimental range of X.
For the plane heated jet with asymmetrical temperature condition, turbulence quantities turned out to be asymmetry as compared to the symmetrical temperature condition. However, mean velocity distribution doesn't show any obvious differences in present experimental conditions.
It can be concluded that the experimental data of conventional heated plane jet can be used for rough estimation of air curtain design. However, to understand the mixing effect of air curtain system thoroughly, there should be some further study on the detailed turbulence structure of two dimensional jet with asymmetrical temperature condition.
