Research on Empirical Engineering Correction Algorithm Integrating Physical Laws
DENG Chen， KONG Yinan， WANG Qing， CHEN Gong
1. Computational Aerodynamics Institute of China Aerodynamics Research and Development Center， Mianyang 621000， Sichuan， China；
2. State Key Laboratory of Aerodynamics， Mianyang 621000， Sichuan， China
Abstract In order to quickly and accurately estimate the aerodynamic characteristics of the aircraft in the early stage of aircraft development, an empirical engineering correction algorithm that integrates physical laws is proposed. The important parameters of the empirical formula are corrected and fitted by a small amount of CFD component aerodynamic coefficient data, so as to improve the calculation accuracy of the engineering algorithm. Firstly, the applicability of the data is verified, and the applicability of the formula source Datcom calculation data and the CFD data is verified; then, the normal force coefficient is analyzed from the perspective of components, and a small number of CFD components are used to correct the aerodynamic coefficient data. The empirical formulas of aerodynamic coefficients of aircraft components are fitted, and the calculation equations of aerodynamic coefficients of the algorithm is confirmed by comparing the calculation results of the revised formulas with the CFD prediction set.
2022, Vol. 5 
