2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/86043Aerodynamic force and flow structures of two airfoils in tandem configuration performing flapping motions are studied, using the method of solving the Navier-Stokes equations in moving overset grids. Three typical phase differences between the fore- and aft-airfoil flapping cycles are considered.17 pages, 15 figures, 3 tablesFluid DynamicsBiological Physicstext