Modeling of delta-wing type vortex generators

A numerical model of delta-wing type vortex generator was developed in two steps. The first step was to obtain a parameterized model of the shedding vortex based on delta-wing theory, which relates the geometry parameters and flow field parameters to the strength of shedding vortex which directly decides the source term. In the second step, a method was proposed to add source terms into the flow control equations so that the shedding vortex could be simulated numerically. As soon as the numerical model was completed, two cases: One for a plate and another for an airfoil segment were investigated for test. Comparison showed that the flow field structure and aerodynamic performance agreed well with those obtained from cases with real vortex generators.