CAJ | 학술논문

乳化油中液滴在高压脉冲电场作用下发生变形振动，油‐水界面张力为液滴振动提供了回复力，对液滴振动产生重要影响。通过建立液滴振动动力学模型，解得液滴振动振幅一次近似解，以分析界面张力对液滴变形振动的影响。由仿真计算结果发现，乳化油中液滴振动振幅峰值随油‐水界面张力的减小而增大，在小界面张力区域内，液滴发生不稳定振动，但可通过增大电场频率来改善；液滴共振频率随着界面张力的增大而增大，因此较大界面张力的乳化油在高频电场中破乳效果较好。实验结果对高效破乳的脉冲电场选择具有指导意义。
유화유중액적재고압맥충전장작용하발생변형진동，유‐수계면장력위액적진동제공료회복력，대액적진동산생중요영향。통과건립액적진동동역학모형，해득액적진동진폭일차근사해，이분석계면장력대액적변형진동적영향。유방진계산결과발현，유화유중액적진동진폭봉치수유‐수계면장력적감소이증대，재소계면장력구역내，액적발생불은정진동，단가통과증대전장빈솔래개선；액적공진빈솔수착계면장력적증대이증대，인차교대계면장력적유화유재고빈전장중파유효과교호。실험결과대고효파유적맥충전장선택구유지도의의。
T he deformation and vibration of droplet in emulsion oil occurred under the action of high voltage pulse electric field , and the resilience of droplet vibration was provided by the oil‐water interfacial tension , meaning that interfacial tension had an important effect to droplet vibration .By establishing the droplet vibration kinetics model , the simple approximate expression of droplet vibration amplitude was obtained , and then the effects of interfacial tension on droplet deformation and vibration could be analyzed .It was found by simulated numerical calculation results that the peak of droplet vibration amplitude increased with the decrease of interfacial tension , and within the scope of small interfacial tension an unstable droplet vibration occurred and could be improved by increasing the electric field frequency .In addition , the droplet resonance frequency increased with the increase of interfacial tension , so emulsion oil with larger interfacial tension had better demulsification effect under the action of high frequency electric field . The investigated results would be favor to the pulse electric field choice for efficient demulsification .