Lift and Lift-Induced Drag Computation by Lamb Vector Integration

Aerodynamic force and Lamb vector field in compressible unsteady flows

“…In figure 4 the computed drag coefficients are proposed as obtained by eqs. (1) and (12). Both formulae are in very good agreement with the near field computation.…”

“…In figure 3 computed lift coefficient has been analyzed. Equation (12) and near field computation are in good agreement. The same result is also obtained by C l r ev .…”

“…Numerical issues affected the analysis of the aerodynamic force by equation (12). Indeed, differently from equation (1), vortical method requires the computation of space derivatives and volume integrals in the zones where accuracy is poorer, such as the shock region and the wake, where the grid is coarser.…”

“…Marongiu and Tognaccini [11] proposed an extension to turbulent flows of this theory, with applications to steady and unsteady two-dimensional flows. Marongiu et al [12] succeeded in giving a rigorous definition of reversible steady force effects (lift and lift-induced force components) in terms of vortex force.…”

Exergy-Based Formulation for Aircraft Aeropropulsive Performance Assessment: Theoretical Development

“…Therefore, the (exergy-based) range R ε flown at a given flight velocity V ∞ during the flight time t f is simply: (66) which, introducing the non-dimensionalized lift and anergy power coefficients yields:…”