Abstract
Form of closed truck has evolved considering maximum consideration on transportation efficiency. As a result, all modem truck shares basic square form design. This experimental study aims to reduce drag force on such a square formed truck using several active flow control methods which influence on separation region. Model used for this study is a 1/14 scale tuck model with ducted fan mounted inside the cargo area to supply necessary air flow. Active flow control using coanda effect effectively reduced drug force by about 20%.
