Study on Construction Method of Irregular Wake Flow Field Based on Grid Adsorption Interpolation

Abstract

The construction of the wake model is of great significance for the study of flight dynamics in the case of wake. Considering the oscillatory divergence characteristics of the long-distance wake, the long-wave oscillation model of the wake is constructed by combining the sinusoidal perturbation characteristics. The velocity parameters of the wake flow are analyzed. A method of grid adsorption interpolation algorithm is proposed to solve the irregular problem of coordinate transformation. Compared with other three-dimensional interpolation algorithms, the results show that the grid adsorption method is not ideal when the data volume is small, but it is faster in the case of large data volume, and the precision can meet the requirements. Using grid adsorption interpolation algorithm, the irregular flow field under the condition of a certain roll angle is constructed.