DNS for New Applications of Surface Textures and MEMS Actuators for Turbulent Boundary Layer Control.

摘要

As a two year project related to our earlier AFOSR work, we examined the use of surface textures to suppress the growth of turbulent spots during the later stages of boundary layer transition. The textures are small and closely spaced and hence require detailed direct numerical simulation of the near surface flow to capture the physics. The work emphasized the fundamental nature of that flow/texture interaction. This project primarily involved the application of our pre-existing computational techniques and software but did require the alteration of the code to handle a boundary layer and to run with high spatial resolution on a parallel processor. The possible applications to boundary layer control are suggested in Background while the section called Proposal Objectives reviews the approaches considered.