摘要
采用分子动力学模拟方法,从分子水平对磁化增注的机理进行了模拟研究。计算结果表明在优化磁感应强度范围内,水的表面张力系数和粘滞系数降低,使水的渗透性和流动性增强,达到增注的目的;在此基础上,从结晶学的角度对磁化防垢的效果进行了分析,研究表明经优化磁场处理后,水溶液的临界晶核半径减小,晶体成核速率和生产速率明显增加,溶液的过饱和度迅速降低,晶体的长大受到限制而形成较小的结晶颗粒,析出的固相将有更多的部分悬浮于水中,易于随水流动而减少沉淀,从而达到防垢、增注的效果。磁化增注效果在B=0.25T时最为明显。
The molecular dynamics simulations were adopted to investigate the mechanism of magnetization increasing injection.When magnetic field is in the range of optimal magnetic field,the surface tension and viscosity of water decreasing and the diffusion coefficient of water increasing made the osmosis and fluidity of water enhancement.On this basis,the effect of magnetization inhibiting scale was analyzed from the viewpoint of crystallization.After treating by magnetic fields,the radius of critical crystal nucleation decreasing and the speeds of crystal nucleation and crystallization increasing,the supersaturating grade of aqueous solution descends and the growth of crystal is restricted that forms smaller crystal particles.Most of the separating crystal particles suspend in water and it gets the effect of inhibiting scale and increasing injection.In particular,the crystal parameters of water solutions change significantly at B=0.25 T.
出处
《青岛大学学报（自然科学版）》
CAS
2003年第3期40-44,共5页
Journal of Qingdao University(Natural Science Edition)
