抄録
Liquid droplet impingement erosion (LDI) is defined as an erosion phenomenon caused by high-speed droplet attack in a steam flow. In a power plant, pipe wall thinning by LDI is observed steam piping system. Because LDI usually occur very locally and is difficult to detect, a prediction of LDI location is required for the safety of the plant system. Therefore, as ultimate objectives, we set the development of the prediction tool of LDI location that can use in power plants easily (LDI Prediction Code). In previous researches, we achieved to enable the evaluation of all the local flow conditions that affect LDI materially. However, to make the LDI prediction code the useful tool in the actual powerplant, more improvement of the present flow evaluation methods are required to be applicable to the wider steam conditions and enable the faster calculations. In this presentation, we tried to improve the correlation equation of the droplet diameter with incorporating the wetness into the equation by the steam experiments.
