Presentation at the 2nd Annual SU2 Conference 2021
Title:
Drag Breakdown of SU2 Solutions around Aircraft
Authors:
Ettore Saetta (University of Naples Federico II); Renato Tognaccini (University of Naples Federico II)
Abstract:
The breakdown of the aerodynamic force in physical components is an important topic in Aerodynamics.The standard near field method is based on the the body surface stress integration and can only provide a decomposition in friction and pressure drag. Far field methods, based on the integration of the momentum flux on a far surface enclosing the body give the chance to decompose the drag in viscous, wave and lift-induced components, more interesting for the aerodynamic designer.We developed two methods for aerodynamic drag breakdown. The thermodynamic method, decomposes the irreversible drag in viscous and wave components. Identifying a spurious drag contribution, it allows for improved drag calculations on coarse grids. The vortex-force method provides a direct definition of lift-induced drag in viscous subsonic and transonic flows. We present here some applications of both drag breakdown methods by post-processing SU2 solutions around bodies and wings.
