CAJ | 학술논문

基于耗散粒子动力学方法，建立了电场作用下近似的液滴粒子力学模型，对两相不相溶液体中液滴在电场作用下的变形特性进行了模拟。模拟结果与他人的实验结果比较表明，模拟结果对液滴形状随时间的演化预测基本符合实际，仅在液滴变形较大时有一定偏差。模拟结果还表明，当外加场强较小时，液滴变形度随时间呈现振荡状态，变形度不会随时间继续增大。增大外加场强，液滴变形幅度增大，振荡频率变慢。当外加场强增大到一定程度时，液滴变形度不再振荡，而是随时间急剧增大，以至液滴最终破碎。场强越大，液滴破碎所需的时间也越短。
기우모산입자동역학방법，건립료전장작용하근사적액적입자역학모형，대량상불상용액체중액적재전장작용하적변형특성진행료모의。모의결과여타인적실험결과비교표명，모의결과대액적형상수시간적연화예측기본부합실제，부재액적변형교대시유일정편차。모의결과환표명，당외가장강교소시，액적변형도수시간정현진탕상태，변형도불회수시간계속증대。증대외가장강，액적변형폭도증대，진탕빈솔변만。당외가장강증대도일정정도시，액적변형도불재진탕，이시수시간급극증대，이지액적최종파쇄。장강월대，액적파쇄소수적시간야월단。
Based on DPD method, a particle mechanical model of the droplet in immiscible liquid in a uniform electric field was developed and the drop deformation process was simulated. There was better consistency in drop shape between simulation and experiment, and deviation was observed only in the case of large deformation. The simulated results also showed that at lower electric field strength drop deformation did not grow up with time, but was in an oscillation state. With increasing electric field strength, oscillation amplitude of droplet deformation increased while oscillation frequency decreased. When field strength increased to a specific value, oscillation could not be maintained and drop deformation sharply increased with time, leading to droplet breakup. The higher the field strength, the shorter the time required for drop breakup.