Investigation on the Scale Effect of Air Tanker with Pumping System resistance components

Abstract

The ship viscous flow field of multiple scale models including real scale was calculated by using RANS method and SST k-ω model. The reliability of the method was verified by comparing the computed results with the experimental results at different scales. By studying the scale effect of various resistance components of a air tanker, it was found that the scale effect of total resistance and water resistance of the model with the pumping system was obvious, and the dimensionless air resistance coefficient almost kept constant at the studied range of Reynolds number. The additional resistance coefficient generated by pumping system increased with the increase of Reynolds number, and the resistance coefficients of the baler increased with the increasing Reynolds number.