Adaptation of the Dynamic Rotor Blade Modelling in CAMRAD for Fluid-Structure Coupling Within a Blade Design Process

摘要

In this paper two different methods to adapt the structural model in blade design due to geometric changes are introduced. The first method is based on scaling laws, whereas the second method uses the solution of a linear system of equations. To evaluate the effect of the adaptation of the structural dynamics, trimmed and fluid-structure coupled CFD simulations for different adaptations were performed. The effects are discussed with the help of global values like collective pitch and required rotor power as well as local aerodynamics and structural dynamics. The impact of the different parameters is analysed and it is shown that the adaptation is not negligible without a loss of accuracy.