Numerical simulation of sloshing in the propellant tank of reusable rocket vehicle using meshfree method

In the present study, the SPH method is implemented to simulate the sloshing in the propellant tank of a reusable rocket vehicle. The SPH method with the surface tension model and LES model is used. The complex three-dimensional geometry is discretized using SPH particles using a CAD-compatible body-fitted particle generator. The narrow band surface reconstruction method is used to reconstruct the simulation particle results. The RLV and sub-orbital RLV sloshing simulations are performed, and the SPH method is then verified by comparing with the experimental observations. Thereafter, two sub-orbital RVL configurations with different ring-baffles sloshing are simulated. According to the mass center of the liquid, it can be found that the ring-baffles can effectively damp the sloshing, and the Type-A80 configuration works better.