In order to understand the anti-icing requirements for the splitter ring splitter ring of aero-engine,the water droplet impingement characteristics on the simplified structure of the splitter ring were calculated by LEWINT software.The results show that the local impingement efficiency is the highest on the leading edge of the splitter ring.There are water droplets impinged on the front section of the lower surface and the area near the leading edge of the upper surface.With the increase of incoming airflow velocity,the total impingement efficiency of the splitter ring gradually increases,the impingement limit first increases and then slowly decreases.With the increase of attack angle,the local impingement efficiency of the lower surface gradually increases,the impingement limit of the upper surface gradually decreases,the total impingement efficiency of the splitter ring gradually increases,the impingement limit of the splitter ring gradually decreases,and when the attack angle exceeds 6°,the impingement limit hardly changes.With the increase of droplet diameter,total impingement efficiency,local impingement efficiency and the impingement limit all gradually increase.Compared with the S-S distribution of water droplet diameter,the local impingement efficiency of the L-D distribution is smaller on the leading edge of the splitter ring,the impingement limit of the splitter ring is larger,and the total impingement efficiency first increases and then decreases with the increase of water droplet diameter.The calculation results can provide a reference for the anti-icing design of the splitter ring.
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