Control of Stress in Aeroengine Turbine Disk Using Radially Rotating Heat Pipe

摘要

Maximal circumferential stress in a rotating disk always appears in the disk hub. The value may be bigger while employing a thermal effect in the aeroengine turbine disk. Although a V-shaped temperature distribution has been proved to be an effective way to reduce the maximal circumferential stress, the existing methods to achieve the distribution may be far from practice. In this paper, a more practical stress control method was proposed by employing a radially rotating heat pipe to achieve an analogous V-shaped temperature distribution, and the numerical investigation was carried out. An analogous V-shaped temperature distribution was achieved. The results showed that, compared with the disk without heat pipes, the maximal circumferential stress in the hub of the proposed disk could be reduced by more than 100 MPa under 10,000 rpm. Additionally, the disk weight and the maximal rim temperature also declined.