DNS of a compliant trailing edge flow

Abstract

Direct numerical simulations (DNS) of boundary layers convecting over a compliant trailing edge are considered in this study. To that end a fully coupled fluid structure interaction framework was developed by coupling a newly developed structural solver to a well validated DNS code. The moving boundaries were represented by an immersed boundary technique using feedback-forcing which was validated with laminar boundary layer instability growth rates and a trailing edge noise problem. First results indicate that the compliant trailing edge yields a decreased noise level in the low and intermediate frequency range. In contrast to that an increased sound level has been found in frequency ranges ..