CAJ | 학술논문

基于自主研发的大型“亚跨超 CFD 软件平台”（TRIP3．0），开发了针对螺旋桨飞机的旋转机械非定常求解模块。控制方程采用曲线坐标系下的非定常 Euler 方程，综合运用动态拼接结构网格技术和双时间步推进方法，重点模拟了双发螺旋桨飞机在螺旋桨转动时的非定常滑流效应。为了保证计算模拟的高效性，引入多重网格技术和大规模并行计算技术。通过模拟某单独螺旋桨验证算例，验证了该方法的可行性。模拟了不同迎角和螺旋桨转速下全机的气动特性，分析了滑流对流场的影响情况，结果表明：螺旋桨滑流对全机流场和气动特性影响明显，并使得升力系数增大。
기우자주연발적대형“아과초 CFD 연건평태”（TRIP3．0），개발료침대라선장비궤적선전궤계비정상구해모괴。공제방정채용곡선좌표계하적비정상 Euler 방정，종합운용동태병접결구망격기술화쌍시간보추진방법，중점모의료쌍발라선장비궤재라선장전동시적비정상활류효응。위료보증계산모의적고효성，인입다중망격기술화대규모병행계산기술。통과모의모단독라선장험증산례，험증료해방법적가행성。모의료불동영각화라선장전속하전궤적기동특성，분석료활류대류장적영향정황，결과표명：라선장활류대전궤류장화기동특성영향명현，병사득승력계수증대。
Based on TRIsonic Platform version 3.0(TRIP3.0),a CFD software trip developed by China Aerodynamic Research and Develop Center,a module of three-dimensional unsteady Euler equations for a rotating machinery is developed and applied to simulate the unsteady slipstream with a propeller.In this mod-ule,dynamic structured cross grid and dual-time method are used.Furthermore,massive parallel computation and multi-grid technology are adopted to decrease the computation cost.The effectiveness of this unsteady Euler solver is validated by the calculation of the thrust and the torque of a single propeller.The comparison with experimental data is presented.Finally,the aerodynamic characteristics of a turboprop aircraft are cal-culated with the focuse on especially the influence of unsteady aerodynamic effect.The results show that the lift coefficient increases significantly by the unsteady slipstream.The influence of angles of attack and rota-tional speeds are discussed,and the vortex of propeller in the flow-field is also analyzed.This work indicates that our developed three-dimensional unsteady Euler module simulates the flow field of rotating machinery rapidly,practically and efficiently.The results based on this method are close to the experimental data.