均匀液滴的形成机理及实验研究
Study of the uniform droplet stream
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摘要: 在均匀液滴O2(1Δ)发生器的研制过程中，发生器中液流受到外界扰动后，扰动沿着液流表面呈指数增长，最终导致液流破段成液滴。在液滴的形成过程中，各种参数的改变都将对液流的状态产生影响，最终影响O2(1Δ)发生器的总体性能。分别从理论和实验两部分对液滴的形成过程进行了对比分析:理论部分论述了液滴形成的理论依据及在发生器中，外界扰动频率、液流喷射流速的改变对扰动增长率的影响及影响趋势；实验部分以成像的方式着重分析了在相同条件下，分别改变扰动频率、液流喷射流速，液滴流的状态及趋势。实验结合理论，寻求可控参数范围，为均匀液滴发生器的液流研究提供依据。Abstract: The disturbance imposed to the stream will grow on the surface of the stream as the stream flows downward. The growth of the disturbance continues until a fluid parcel is pinched off. The fastest growth rate is related to the controllable parameters such as the speed of the jet and the frequency of the disturbance. This paper presents an experimental and analytical study to examine the breakup of a round jet into a droplet stream. The range of the speed of the jet and the frequency of the disturbance in the uniform droplet singlet oxygen generator were acquired.
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Key words:
- uniform droplet /
- singlet oxygen generator /
- coil /
- disturbance
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