Numerical Investigation of Performance of the Air Tab in the Turbofan Nozzle

摘要: The air tab is a new technique with better effects on mixing but minimum penalty thrust. present numerical investigation aims to study the effect in turbofan nozzle. Meanwhile, parametric studies of air-tab flow rate ω and tube inner diameter d are also carried out. thermal efficiency ηT, total pressure recovery coefficient σair tab, thrust Cf compared find out quantitative differences among models researched. results reveal that would increase little further rather than create great by jet itself. increases greatly from 0.1756 0.3425, whereas high-temperature region (where temperature higher 650 K) reduced 29.2 5.2% nearly unchanged, only about 0.58%. depth penetration cannot determine m...