Numerical Calculation and Test Analysis of High Speed Taxiing Performance of Amphibious Aircraft on Calm Water

Aiming at the problems of large motion response of amphibious aircraft and strong non-linearity of flow field during high speed taxiing on calm water, a numerical method based on traditional dynamic mesh method was proposed. It is used to simulate the flow field characteristics and motion characteristics of the aircraft taxiing on calm water by solving Reynolds Average N-S equations and motion equations. This method is an implicit finite volume method. The turbulence is treated by k-ω(SST Menter) model with wall function and the free surface is captured by VOF method. The attitude and heave of the aircraft at different speeds were predicted quickly by using coarse grids. Then the aircraft was placed in the predicted state for fine grid generation, and finally the precise numerical analysis was carried out. In order to verify the correctness of the numerical results, a test was carried out in tank, and the numerical results were further compared with the test results. It shows that the simulation is consistent with the flow field characteristics of the test, and the calculation accuracy of resistance, attitude and heave reaches 90%. The feasibility of the numerical method was verified.