Effect of Droplet Diameter on Liquid Impingement Erosion

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  • 液滴衝撃エロージョンに及ぼす液滴径の影響

Abstract

In the steam piping system containing liquid droplets, the pipe wall is damaged by droplet impingement. One of the most important parameter affecting erosion is droplet diameter. It was reported the volume loss per droplet increases with 3.67th power of droplet diameter. But, conventional research, intended droplet diameter or nozzle diameter is 0.81-5.0mm. In this study, rotating disk method and high pressure impingement test method with fan-shape spray nozzle were used to carry out the experiments with small droplets on pure aluminum and low carbon steel S15C specimens. The effect of diameter was expressed as a parameter of volume loss per droplet. The volume loss per droplet increases with 4.67th power of droplet diameter.

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