Computational investigation of slot geometric structure effects on the flow-field of shock-induced fluidic vectoring nozzle

Numerical simulation employing the RNG k-ε model has been conducted to determine the internal flow-field parameters of a shock induced axisymmetric fluidic vectoring nozzle with different slot geometric structure in its divergent section in design situation. A separate vortex and an opposite revolving jet vortex exist in the divergent section. A large recirculation region locates between the secondary flow injection and the outlet. Circumferential angle(θ), distance between the slot and outlet section(SX) and axial angle (Ψ)are the key parameters of the slot geometric structure. When θ=45°, SX=19 mm, Ψ reverse to the primary flow, it has efficient thrust vectoring angle.