Comparative Study On Different Modelingmethods Of Large Cooling Tower

Hyperbolic natural draft cooling tower is an important building of nuclear power plants and thermal power plant,undertake environmental protection,water-saving and energy-saving features,as China's electricity consumption is growing,more and more large size of cooling tower,the design is becoming more and more difficult.Simulation of tower,in shell beam element to simulate the pillar,there are differences calculated by SAP2000,ANSYS and LBS results,the power industry design institute since there is no accurate understanding of design is multiplied by a larger amplification factor.In order to investigate the characteristics of the cooling tower and the different force of the different modeling methods,the following contents are studied in this paper:1.Using the finite element analysis software ANSYS,the shell element is used to simulate the column and the beam element to simulate the column to establish a model.The solid element is used to simulate the tower and the pillar to establish second models.To investigate the influence of different grid partition on the internal force of the solid element,and to determine the reasonable grid density.Method for determining reasonable internal force of solid element section.2.To carry out different loads(gravity load,temperature load and wind load)stress analysis of two kinds of model of cooling tower under different loads,depicting the cooling tower and the circumferential stress characteristics in meridian,and compare the two kinds of model of cooling tower under each load in different parts of the internal force difference.3.To explore the cooling tower reinforcement difficulty and reinforcement for cooling tower,And compare the difference of reinforcement.