Numerical investigation of heat transfer under confined impinging turbulent slot jets

This work numerically investigates confined impinging turbulent slot jets. Eight turbulence models, including one standard and seven low-Reynolds-numb er k-epsilon models, are employed and tested to predict the heat transfer p erformance of multiple impinging jets. Validation results indicate that the prediction by each turbulence model depends on grid distribution and numer ical scheme used in spatial discretization. In addition, spent fluid exits are set between impinging jets to reduce the cross-flow effect in degradati on of the heat transfer of downstream impinging jets. The overall heaf tran sfer performance can be enhanced by proper spent fluid removal.