CAJ | 학술논문

为研究间断界面动力学特性对挥发性污染物在间断界面上传质的作用，在 VOF 方法基础上，建立了忽略化学反应的挥发性污染物三维瞬态水气耦合迁移模型；在模型求解过程中，考虑水气大密度差的作用，提出全量限定离散格式。结果表明：乙醇溶液传质的数值计算结果与试验结果吻合较好；初始能量越高的水流，遇到障碍物后间断程度越高；间断程度的提高促进了挥发性污染物界面传质过程；高频水波带动空气中污染物迁移，空间上污染物浓度的波动频率随间断程度的增高而增高。
위연구간단계면동역학특성대휘발성오염물재간단계면상전질적작용，재 VOF 방법기출상，건립료홀략화학반응적휘발성오염물삼유순태수기우합천이모형；재모형구해과정중，고필수기대밀도차적작용，제출전량한정리산격식。결과표명：을순용액전질적수치계산결과여시험결과문합교호；초시능량월고적수류，우도장애물후간단정도월고；간단정도적제고촉진료휘발성오염물계면전질과정；고빈수파대동공기중오염물천이，공간상오염물농도적파동빈솔수간단정도적증고이증고。
In order to study the effect of dynamic properties of discontinuous interfaces on mass transfer of volatile pollutants, a transient three-dimensional coupling transport model was developed based on the VOF method. The chemical reaction was ignored in the coupling transport model. With consideration of the large difference between water density and gas density, an entirely limited differencing scheme was developed. The computational results of mass transfer in an ethanol solution agreed with the experimental results. The degree of the discontinuousness increased with the initial energy of water flow blocked by barriers. Such an increase enhanced the mass transfer of volatile pollutants at the water-gas interface. Water waves with high frequencies dragged the transportation of pollutants in the air. The fluctuation frequency of pollutants increased spatially with the increase of the degree of the discontinuousness.