Hits:

Date of Publication:2022-10-09

Journal:排灌机械工程学报

Affiliation of Author(s):能源与动力学院

Issue:10

Page Number:835-839

ISSN No.:1674-8530

Abstract:In order to study the temperature difference in cavitation field for water at room temperature and high temperature and to reveal thermodynamic effect on cavitation,the cavitation field on NA-CA0066(MOD)airfoil surface was simulated with CFD software based on mass transport equation and full cavitation model.Source term that depicts the thermodynamic effect was added in energy equation by importing UDF code and the saturated vapor pressure was set as a function of temperature.The re-sults show that temperature altered in cavitation field because of absorption of latent heat when cavita-ting,and cavity zone temperature is respectively 0.13,0.84,13.00 K lower than that of upper steam,which is respectively at 293 ,373 ,473 K.In other words,the higher the temperature of the fluid,the greater temperature drop is in cavity zone.Moreover,with decrease of saturated pressure caused by the decrease of local temperature,the length of cavity is shortened.

Note:新增回溯数据