CAJ | 학술논문

在微粒流的自由下落过程中，环境空气会被卷吸到微粒流中，形成微粒羽流，有关微粒羽流与环境空气关系的基础理论及数值模拟研究文献相对较少。本文通过RNGκ-ε模型对二维微粒羽流中的微粒与环境空气的耦合进行数值模拟，并讨论了微粒羽流速度分布、微粒羽流密度与羽流的流速变化关系，以及微粒羽流质量流对羽流流速的影响。
재미립류적자유하락과정중，배경공기회피권흡도미립류중，형성미립우류，유관미립우류여배경공기관계적기출이론급수치모의연구문헌상대교소。본문통과RNGκ-ε모형대이유미립우류중적미립여배경공기적우합진행수치모의，병토론료미립우류속도분포、미립우류밀도여우류적류속변화관계，이급미립우류질량류대우류류속적영향。
In the process of free falling of particle stream, the ambient air may be drawn into the particle stream to form a particle plume. The relevant literature of the fundamental research and the numerical simulation in particle plumes and the environmental air are quite limited. This paper simulates, on the basis of the RNG κ-ε model, the two-dimensional coupling between the particle plume and the ambient air. The velocity distribution of the particle plume, the varied relationships between the density of the particle plume and the plume velocity, the influence of the mass flow rate of the particle plume on the plume velocity are also discussed.