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This project takes XX unit as the analysis object to study the first-order vibration wind speed of wind turbine under shutdown vibration. The vortex-induced vibration response is calculated and the displacement under resonant wind speed is calculated by fluid-solid coupling method. The above analysis techniques and methods are forward-looking and advanced in vibration characteristics of domestic wind turbines. On the basis of fluid dynamics analysis, the suppression measures are studied emphatically. Through the optimization and comparison of different inhibition schemes, the effect of inhibition measures was quantitatively analyzed. The analysis shows that the vibration characteristics of wind turbine with high flexible tower has its own particularity. The first order vibration probability and vibration displacement can be effectively reduced by pneumatic method and external measures.

Designing the public safety and health system in the context of epidemic is critical to public safety. This paper conducts modeling and analysis on the basis of the SIR model, establishes the “big prevention” system and the “grassroots” grid system. The purpose is to improve the response speed of the public safety and health system respectively, and play a reverse detection role on the epidemic data reported by the grassroots and reduce the possibility of under-reporting. The big data and computer network are used in the public safety and health system, which is the main tool of information transmission and analysis of the public safety and health system. Finally, the feasibility of the design is demonstrated by a case study.