Design And Research Ontest Device Of Rotor Corrosion In Flowing Seawater

The navigation condition and service life of ships are greatly affected by the performance of ship materials.Developing new materials with high corrosion resistance,high antifouling and high resistance to erosion is a research focus at home and abroad.It is an important part of material research to the performance testing of ship materials,and the test device is a necessary tool in the research of material performance.The purpose of this paper is to develop a new test device of rotor corrosion in flowing seawater,which can simulate practical using condition of ship materials in the seawater and improve the authenticity and reliability of the test data to a maximum extent.The main contents are as follows:In this thesis,the development of test device of rotor corrosion in flowing seawater was analyzed at home and abroad.The overall design was confirmed according to the functions and technical requirements of the test device.Based on the research of the computational fluid dynamics(CFD),the motion regularity of the flow field in different rotor immersion depths was obtained by VOF two-phase flow model using FLUENT of CFD analysis software, and the best rotor immersion depth was confirmed.On the basis of the optimization theory,the dynamic performance of the main-shaft system was analyzed and optimized with parameter language APDL of ANSYS finite element analysis software.According to the research results,the test device of rotor corrosion in flowing seawater was completed,and lastly the test device was installed and debugged.Debugging results showed that the test device of rotor corrosion in flowing seawater had such features as smooth operation and reliable performance.Meanwhile,it could also simulate the real marine environment well when the ship was navigating.In addition,the test device had been applying to a natural marine environment experimental station successfully in our country.