Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Validation of Inviscid CFD Analysis for the Generic Future Fighter
Submission Author:
Daniel Ferreira , SP , Brazil
Co-Authors:
Daniel Ferreira, Adson De Paula, Ney Rafael Secco, Ricardo Galdino da SIlva
Presenter: Adson De Paula
doi://10.26678/ABCM.COBEM2023.COB2023-1927
Abstract
This work presents a numerical investigation of the aerodynamic characteristics for Generic Future Fighter (GFF) subscale model developed initially by Linköping University and evaluated in follow up by collaboration with Instituto Tecnológico de Aeronáutica (ITA). The aerodynamic investigation reflects fighter requirements driven by stealth capabilities, super-cruise and long range presenting moderated swept wing, canard, and V-tail configurations.The main objective of the study is to validate non-viscous numerical results by lift data at subsonic conditions, comparing them with numerical and experimental results, carried-out at ITA wind tunnel test facilities in the Reynolds number condition of 400,000. Moreover, an extensive evaluation of the flow topology was performed in order to identify main issues of the aerodynamic design. In this sense, validating and evaluating the results bring a non-viscous approach for the use of high-fidelity tools on conceptual design early phase of fighter. Adopting inviscid approach can offer several advantages, including reduced time consumption, enabling a more comprehensive exploration of design during the design phase, and increased cost-efficiency due to diminished computational resource demands, thereby conserving funds for subsequent project stages. The numerical results indicate fidelity compared to viscous analysis and for the experimental lift.
Keywords
CFD, Inviscid flow, Euler Method, Finite volume method, Aerodynamics
