Fabrication And Application Of Multifunctional Passive Device Based On Polarization-maintaining Fiber

In recent years,people have accelerated the development and utilization of earth resources for a better life,especially when some nonrenewable energy such as coal mine and oil are consumed in large quantities,it also causes certain pollution to the natural environment,so it is urgent to develop new energy.Wind energy is a kind of renewable clean energy,and the energy of wind energy on the earth is far greater than that of water flow.Therefore,the development and utilization of wind energy can effectively alleviate environmental pollution,energy depletion and other issues.The use of wind energy is mainly to convert the kinetic energy of atmospheric movement into other forms of energy.The use of wind energy has a long history.Its specific uses include: wind power generation,sail assisted navigation,windmill water lifting,wind-induced heating,etc.The common wind power generation is to use the wind energy on the ground for power generation.However,the wind on the ground is not only low in speed and stability,so the use of the wind energy on the ground for power generation is not stable and efficient.In contrast,compared with the wind on the ground,the high-altitude wind energy has the advantages of faster and more stable wind speed,rich reserves,24-hour uninterrupted and so on.But the acquisition of high-altitude wind energy needs special equipment.This paper studies the important equipment of high-altitude wind energy acquisition,parafoil.Firstly,the basic principle and requirements of kite power generation are understood,and the parafoil airfoil used to collect high-altitude wind energy in kite power generation is studied.Based on the extensive investigation of literature,the airfoil which has a great influence on the aerodynamic performance of parafoil is selected,and profili and ANSYS are used The tool software such as workbench has carried on the simulation to it,thus obtained the aerodynamic characteristic under the different attack angle,obtained the basic airfoil through the comparative analysis,and on this basis has carried on the optimized design to the airfoil according to the kite power generation request,through the numerical simulation has determined the parafoil airfoil which suits the kite power generation.The operational performance of the parafoil used for kite power generation needs to be considered,so it is necessary to study the three-dimensional structure of the parafoil after optimization design.Through ANSYS Based on the designed airfoil,the three-dimensional structure model of parafoil is established by workbench software,and the three-dimensional structure of parafoil is simulated by CFD method,and the pressure cloud diagram and velocity streamline diagram of parafoil are obtained,so as to simulate and analyze the aerodynamic performance of parafoil,and further carry out fluid solid coupling and vibration mode analysis of parafoil,and simulate and study the structural mechanics of parafoil It combines the aerodynamic characteristics and structural mechanical characteristics of the parafoil to provide the basis for further study of the kite powered parafoil.