Eulerian multiphase analysis for heat transfer enhancement by CO2 sublimation in slot jet impingement

As a result, analysis of gas-solid jet considering sublimation predicts higher heat transfer coefficients than those without sublimation analysis, and sublimation maintains the temperature of the jet bulk flow for a longer time through the absorption of additional thermal energy. As the Reynolds number increases, the amount of sublimation increases and thus heat transfer enhancement is also accompanied. It can be confirmed that the heat transfer performance at the jet target surface edge weakened by the diffusion of the wall jet flow can be compensated by the dry ice sublimation. The sublimation model presented in the current study shows that the characteristics of the impinging jet cooling containing dry ice are effectively analyzed.