Aeroelastic prediction and analysis for a transonic fan rotor with the “hot” blade shape

摘要: Abstract This paper focuses on aeroelastic prediction and analysis for a transonic fan rotor with only its “hot” (running) blade shape available, which is often the case in practical engineering such as design stage. Based an in-house well-validated CFD solver hybrid structural finite element modeling/modal approach, three main aspects are considered special emphasis dealing shape. First, static presented transformation between “cold” (manufacturing) blades, influence of dynamic variation evaluated aerodynamic performance investigated. Second, implementation energy method flutter given both regularly used fixed variable considered. Through comparison, stability also Third, another common way to predict flutter, time-domain method, same concerned case, from predicted characteristics compared those method. A well-publicized axial-flow rotor, Rotor 67, selected typical example, corresponding numerical results discussions detail.