A numerical study on the effects of high-lift devices on the aerodynamic characteristics of a large aircraft

• Published in: Hangkong Gongcheng Jinzhan Vol. 16; no. 3; pp. 70 - 81
• Main Authors: ZHU Guowang, WU Hengbin, HUANG Shenghong, NI Zao
• Format: Journal Article
• Language: Chinese
• Published: Editorial Department of Advances in Aeronautical Science and Engineering 01.06.2025
• Subjects: aerodynamic performance; high-lift device; rans; structured grid; wide-body aircraft
• ISSN: 1674-8190
• DOI: 10.16615/j.cnki.1674-8190.2025.03.07

The high-lift device of an aircraft can improve its lift and safety, and the reasonable application of the high-lift device is crucial to improving the safety of the aircraft. This study evaluates the impact of various high-lift devices on the aerodynamic performance of wide-body airliners during these critical phases. A fully structured bodyfitted grid is adopted to discretize the large wide-body aircraft into hundreds of millions of cells, and the Reynoldsaveraged turbulence model is applied to conduct numerical simulation on aerodynamic performance. The reliability of the numerical simulation method is verified by comparing with the wind tunnel experimental results. Four typical cases of Ma=0.2, incoming flow angle of 0°, 5°, 10° and 15° are selected, and the effects of lift devices such as flaps, slats, spoilers, etc. on the overall aerodynamic performance of the aircraft are analyzed. The study′s findings reveal that the fully structured grid employed herein accurately captures the three-dimensional mean