The Influence Of Aircraft Engine's Jet Flow Around Ship Deck

The air-operated parameter's distribution of the jet flow field of the aircraft plays an important role in evaluation of the propulsion's push, affection to the aircraft itself and the performance of infrared hidden. At the same time, when the aircraft rising and landing, the jet will make great influence on the equipment and personals. Pointed at some kind aircraft engine, the paper mainly contains the following aspects:At present, the reformed model of carrier-borne engine on the basis of existed physical model, and the analysis of experimental result. Divided the jet flow field along the radial as: boundary layer field, interflow increasing field, waken field and stable core field, and along the axial direction, there are non-stabilization field and stabilization field. Considered the actual requirement, this paper only calculated the stream line's distribution under the full-stress state, transient state, nominal state and crawling state.The aircraft engine has so many efflux parameters, and each depends on each. Using the software of MATLAB and ORIGIN to calculate the change tends. Firstly getting the angle of turning cross-section and the distance between boundary layer's outer limit and the centurial symmetry axis and then to determine the whole flow field's basic frame; on the basis of that , and then get the centurial symmetry axis's velocity, temperature and pressure's change and getting the dates at any point through interpolation.Elementary research is made through CFD to drift plate. Mainly simulate affection the drift plate to the jet current at different lean angles, and also simulate the engine inner flow field, and show the rule of velocity, temperature and pressure. And compare the calculated velocity at symmetry central axis to the experimental result, to judge whether it's true or false.