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针对射流柱在横向来流下的破碎过程,采用欧拉-拉格朗日模型对其进行了数值模拟。其中射流柱的一次雾化采用WAVE模型,颗粒的二次雾化采用KH-RT混合模型。计算得到的液滴颗粒平均直径在70μm左右,还得到了雾化场的喷雾结构、速度分布、索特尔直径分布,以及射流柱在不同来流速度下破碎过程等。同时通过采用不同二次破碎模型,分别将计算结果与试验结果进行对比,结果表明采用的KH-RT混合雾化模型在一定程度上能够更加真实地反映雾化过程,并较好地捕捉射流雾化特点。
Aiming at the crushing process in which the jet column flows downwards in horizontal direction, the Euler-Lagrange model is used to simulate it. One jet of the jet column using the WAVE model, secondary particles using KH-RT hybrid model. The calculated average diameter of the droplet particles is about 70μm, and the spray structure, velocity distribution, Sotell diameter distribution of the atomization field and the crushing process of the jet column at different flow velocities are also obtained. At the same time, by using different secondary crushing models, the calculated results are compared with the experimental results respectively. The results show that the KH-RT hybrid atomization model can reflect the atomization process more accurately and capture the jet fog better Features.