OS-606 Stability Analysis of a Turbine Rotor System with Alford Forces(Organized Session 6: Unsteady Aerodynamic Force/Vibration)

スポンサーリンク

概要

• 論文の詳細を見る

• A stability analysis of a turbine rotor system incorporating the effects of Alford forces has been carried out. Alford force refers to destabilizing lateral aerodynamic forces caused by non-axisymmetric turbine tip clearance. For aerodynamic forces, an actuator disc model, previously developed by Song and Martinez-Sanchez (1997) was used. A six degree-of-freedom model of a rotor system supported at both ends by bearings has been developed. The fluid and structure models were then combined to conduct a fluid-structure interaction analysis. Classical Euler-Bernoulli beam finite element with support springs and dampers has been employed for the structural modeling. The results show that the Alford force can indeed cause structural instability and that external damping can stabilize such rotor system. Furthermore, the amount of required damping increases with the shaft length.

• 社団法人日本ガスタービン学会の論文
• 1999-11-14

著者

• Kim Heung

  Inha University Department Of Aerospace Engineering

• CHO Maenghyo

  Seoul National University, School of Mechanical and Aerospace Engineering

• SONG Seung

  Seoul National University, School of Mechanical and Aerospace Engineering

• Song Seung

  Seoul National University School Of Mechanical And Aerospace Engineering

• Cho Maenghyo

  Seoul National University School Of Mechanical And Aerospace Engineering

関連論文

• OS-606 Stability Analysis of a Turbine Rotor System with Alford Forces(Organized Session 6: Unsteady Aerodynamic Force/Vibration)

スポンサーリンク