Numerical Fluids is one of the most devoted and established international forums on fluid flows, heat and mass transfer problems. For this special issue, authors were selected by the organizing committee of Numerical Fluids after exceptional contribution and presentation of their short papers at the 10th International Symposium on Numerical Analysis of Fluid Flow, Heat and Mass Transfer - Numerical Fluids 2015. This is a sufficient indication of Numerical Fluids 2015 achievement in applied and computational sciences and engineering, and its significant progress for being a platform for the exchange of latest scientific and technical information in the field and shaping of future directions and priorities for better scientific solutions for fluid flows, heat and mass transfer problems.