Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 12, 2022 - November 13, 2022
In this study, a numerical analysis using the Lattice Boltzmann Method was performed on a Multi-Slotted Wing that mimics a Bird's Wing Tip, for which experimental results have been published. The aim of this study is to investigate the feasibility of the application of a Multi-Slotted Wing mimicking a Bird's Wing Tip to an axial compressor. In prior experiments, multiple slots in the wing tip mimic a Bird Wing Tip. The results of the analysis showed that the change in swirl velocity around the wing tip vortex with and without slots could be captured with sufficient accuracy, confirming the validity of this method. In the downstream, a Multi-Slotted Wing shows a 10% decrease in circulation compared to the base model. Further detailed analysis revealed that the wing tip slots promote the subdivision of the wing tip vortex and allow the wing tip vortex to decay faster than without the slots, which can contribute to the reduction of induced drag.
