Finite Element Analysis On Nuclear Power Plant Hot Leg And Large Wind Turbine Blades

As people's growing awareness of environmental protection and the government's increasingly stringent environmental requirements,along with the introduction of a series of environmental protection policies,there is a rapid development of China's clean energy industry.Design and manufacture of clean energy power generation equipment is the industrial foundation and top priority,so it is very necessary and effective to guide and test the simulation calculation of the important components of clean energy power generation equipment.In this paper,finite element software ANSYS Workbench are used in the analysis of a kind of wind turbine blade and the hot leg of AP1000 reactor.Both are very important equipment components:the hot leg is a key part of reactor coolant piping section of nuclear power plant,the coolant in the hot leg is a kind of fluid with high temperature and high velocity and may contains radioactive materials from the reactor,it is necessary to check whether it can operate safely.The blade is one of the most critical parts of the wind turbine,the blades and wheels are composed of energy harvesting mechanism,which transfer the wind energy into mechanical energy,at the same time,the blade is the main bearing part of the wind,its shape and performance guarantee the wind turbine running safely and efficient.Static analysis of the blade can provide a reliable basis for structural improvement and optimal design.The finite element software ANSYS Workbench is used in the static structural analysis of a kind of 2MW wind turbine blade after accurate modeling.The results show that under the maximum possible load,the finite element model of the blade is within the safe range.But relatively speaking,the beam and the trailing edge are relatively bearing larger stress and more dangerous.ANSYS Workbench is also used in thermo-fluid-solid coupling analysis for hot leg of AP1000 reactor.The resulting heat flux,temperature field,stress and strain of the pipe are calculated.It is found that the deformation of the hot leg from thermo-fluid-solid coupling is two orders of magnitude higher than that from fluid-solid coupling,while the distribution of strain,stress,flow velocity is approximately equal to corresponding results from fluid-solid coupling.The minimum velocity from thermo-fluid-solid coupling is calculated to be about 9.27 m/s.This is obviously different from the results from fluid-solid coupling,where the minimum velocity is found to be nearly zero along the wall of the hot leg pipe.In the normal working conditions the hot leg of AP1000 is also simulated and found to meet the requirements of thermal-fatigue design.