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用激光全息技术研究了几种不同椭圆度喷孔的喷雾总体特性，发现其外观形状既非圆锥体也非椭圆锥体，而是横断面为椭圆但其长短轴沿射流方向交替变化的特殊锥体横断面长短轴交替变化是雾场涡结构自感应变形的表现，它使周围流体大量卷入喷雾区在喷孔近处，椭圆喷雾在长短轴平面内具有不同的横向扩散速率，但在远离喷嘴处，椭圆喷雾的各向扩散速率则趋于一致．实验观察表明，椭圆喷雾相对于轴对称喷雾有更好的卷吸效果．
The laser holographic technique was used to study the general spray characteristics of several oval holes. It was found that the appearance of the spray cone was neither cone nor ellipsoid, but rather the special cone whose cross section was elliptical but whose major axis and minor axis alternated along the jet direction The alternation of the major axis and the minor axis of the body cross section is the manifestation of the self-induced deformation of the vortex structure in the fog field. It causes a large amount of surrounding fluid to get entangled in the spray area near the injection hole. The elliptical spray has different lateral diffusion rates in the long- The nozzle, the elliptical spray diffusion rate tends to be consistent. Experimental observations show that the elliptical spray has a better entrainment effect than the axisymmetric spray.