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针对气固圆湍射流流动采用基于双向耦合的大涡模拟方法进行了模拟,研究了直径为105μm的颗粒的存在对圆湍射流的影响。单相流动的预报结果在射流形态以及时均速度和湍流强度等统计结果方面均与实验结果符合良好。两相流动的时均速度和湍流强度等统计结果与实验结果符合较好,与单相流动的模拟结果相比,105μm的颗粒加入流场后,由于其较快的响应特征起到了阻尼作用,从而降低了气相场的湍流强度。
A large eddy simulation method based on two-way coupling was used to simulate the gas-solid circular turbulent jet flow. The effect of particles with a diameter of 105 μm on the turbulent jet flow was studied. The results of single-phase flow prediction are in good agreement with the experimental results in terms of jet shape and statistical results such as mean velocity and turbulence intensity. The statistical results of the mean velocity and the turbulent intensity of the two-phase flow are in good agreement with the experimental results. Compared with the simulation results of the single-phase flow, the 105μm particles have a damping effect due to their quick response characteristics after being added to the flow field, Thus reducing the turbulent intensity of the gas phase field.