Abstract:

In order to study the influence of the ratios of injection pressure and injection temperature, injection slot width and jet angle on fluidic throat control, a two-dimensional flow field inside a nozzle and around it with a jet flow at the throat is numerically simulated by computing the N-S equation through secondorder wind disperse schemes and an S-A model. The results show that the ratio of the throat area decreases almost linearly when the ratio of injection pressure or injection slot width increase, but the injection temperature has little influence on the throat area. Jet angle has some influence on the ratio of throat area, which becomes the smallest when the jet angle is around -30°.

Key words: nozzle, fluidic throat control, throat area, jet flow, ratio of injection flux