Fuel Sloshing Analysis In Tanks Of Aircraft

With the process of the large-scale in aircraft size deepening, the demand of theplane’s flight distance and the carrying capacity is also rising, it is required the fuelsystem has good ability to supply fuel and to carry more fuel load. In order to meet theneeds of increasing the amount of fuel in the plane, large independent tank have beenapplied more and more widely, because of the feature of utilizing the interior space.With the size in fuel tank and the fuel load increasing, the issue of fuel sloshing is animportant task worthy researching on.The method of FEM coupling SPH was employed in this paper to work out theissue of fuel sloshing, the finite element method (FEM) is applied to the structure offuel tanks and SPH to fuel, the combination of FEM and SPH retains both theadvantages of FEM in structural mechanics and the advantages of SPH in nonlinear,liquid tumbling and liquid breakup. SPH (Smoothed Particle Hydrodynamics), is a kindof meshless method developed rapidly in the past20years, the basic idea of SPH isreplace the liquid or solid by a set of particles, the kernel function is the link betweenparticles.The simulation of fuel sloshing was carried out in this paper with respect to8cases,namely the sloshing response of top tank and down tank in the condition of differentvelocity and liquid in different heights, it proved that the cases with bigger liquid depth,under the same velocity, caused greater impact on tank structure. In addition, thesimulation of another8cases was carried out to observe and study the effect of baffle.The method of FEM coupling SPH was employed in this paper to work out theissue of fuel sloshing, according to the results of simulations, it was concluded that themethod proposed in this paper could be applied to the issues of liquid sloshing and haveachieved good results, the method proposed in this paper could be used as a method tosolve other similar engineering problems, this paper lain a solid foundation for theissues of fuel sloshing to some extent.