Next, I will discuss my postdoctoral research projects at the University of Colorado at Boulder. In my first postdoctoral project, I developed a dynamic Lagrangian Averaged Navier-Stokes (LANS-±) model. This model was then tested in decaying isotropic homogenous turbulence simulation, a-priori tests, and turbulent channel flow simulation. All of these tests indicate that the dynamic LANS-± model is suitable for anisotropic turbulence simulation and it also shows some advantages over the traditional RANS and LES model. My second postdoctoral research project is to perform helicopter rotor flow simulation by free wake modeling. In this research, I combined the free wake modeling technique with full Navier-Stokes simulation to simulate the helicopter rotor flow. By this approach, the influence of the rotor far wake on the near field solution is recovered accurately without increasing the simulation domain and mesh resolution. Very accurate simulation results can be achieved by using only partial simulation domain
Finally, I will give a brief introduction to other projects I have performed, including compressible LANS-± model development, compressible turbulence simulation, microfluidic simulation, and zonal RANS/LES for helicopter rotor flow. My future research plans will also be discussed.