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首页> 外文会议>International symposium on air breathing engines >NUMERICAL STUDY OF THE IMPACT OF AIRCRAFT GEOMETRY ON CONTRAIL FORMATION
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NUMERICAL STUDY OF THE IMPACT OF AIRCRAFT GEOMETRY ON CONTRAIL FORMATION

机译：飞机几何形状对气道形成影响的数值研究

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This study describes numerical simulations of aircraft plumes induced by the interaction between engine exhaust jets and trailing vortices. Depending on microphysics processes, these plumes may turn into contrails that represent the issue of the studies presented here. Two geometries are computed: In the first one, a simplified B737 geometry is used. In this geometry, engines are quite close to the fuselage whence the jet and the vortex are distant enough so that engine exhaust gases dynamics and mixing are rather controlled by the jet diffusion. In the second geometry, engines are shifted from their original position and are nearer to the wingtip. In this case, the jet/vortex interaction is much more important. So, dynamics and mixing are mainly controlled by the entrainment with the vortex rollup.
机译：这项研究描述了由发动机排气喷嘴和尾随涡流之间的相互作用引起的飞机羽流的数值模拟。根据微物理学的过程，这些羽状流可能会变成凝结尾迹，代表这里提出的研究问题。计算了两个几何：在第一个中，使用了简化的B737几何。在这种几何形状中，当喷嘴和涡流足够远时，发动机与机身非常接近，因此发动机的排气动力学和混合受喷嘴扩散的控制。在第二种几何形状中，发动机从其原始位置移开，并且更靠近翼尖。在这种情况下，射流/涡流相互作用更为重要。因此，动力学和混合主要由涡卷的夹带控制。

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