Online Dynamic Mode Decomposition Methods for the Investigation of Unsteady Aerodynamics of the DrivAer Model: Part 1. Validation of DMD Methods for Surface Forces

摘要

It is believed that Dynamic Mode Decomposition (DMD) is a very useful method for the analysis of unsteady aerodynamics of road vehicles. However, it seems that the conventional DMD method is not practical regarding the application on the aerodynamic design of road vehicles, since DMD computation requires massive memory. Alternatively, online DMD methods seem to be very useful in practice, as those require much less memory than the conventional method. In this research, further validation of the online DMD on the aerodynamic forces on the DrivAer model is conducted, through the comparison with results from other enhanced DMD methods and FFT.