利用激光光梯度力消除气溶胶雾霾粒子的机理研究

发布时间：2018-10-07 21:09

【摘要】：针对气溶胶雾霾粒子在大气流中所受力的平衡体系(旋转升力平衡重力,粒子与粒子之间依靠斥力形成稳定的网状的力平衡体系)的问题,提出了用激光光梯度力破坏力平衡进而消除雾霾的新机理.首先,根据牛顿第二定理,得到了粒子所受力的非线性方程组,应用Runge-Kutta法积分求解了雾霾颗粒在大气流中所受的主要力(空气曳引阻力、范德瓦耳斯斥力、旋转升力)的数值,成功验证了西安市2013年12月17—25日、2014年2月20—26日两次雾霾检测试验结论:在雾霾过程中,粒径在0.5—0.835μm径段的粒子数浓度增加最明显.其次,在雾霾粒子形成的均匀介质中,计算了激光光梯度力的大小.研究发现,激光光梯度力的数量级恒大于雾霾颗粒所受主要力的数量级,激光光梯度力完全可以破坏雾霾颗粒所受力的平衡体系.因此,用激光光梯度力消除雾霾是可行的,这种新的解决雾霾的方法对人们的实际生活、环保及创建美丽的蓝天具有非常重要的意义.
[Abstract]:Aiming at the problem of the equilibrium system of aerosol haze particles acting on large airflow (rotating lift equilibrium gravity, the repulsive force between particles forming a stable network of force equilibrium systems), A new mechanism for eliminating haze by balancing the destructive force of laser light gradient force is proposed. First of all, according to Newton's second theorem, the nonlinear equations of force on particles are obtained, and the main forces (air drag, van der Waals repulsion, rotating lift) of haze particles in large airflow are solved by Runge-Kutta method. The results of two haze tests in Xi'an from December 17 to 25, and February 20 to 26, 2014 showed that the concentration of particles in the diameter of 0.5-0.835 渭 m was the most obvious in the haze process. Secondly, in the homogeneous medium formed by haze particles, the magnitude of the laser optical gradient force is calculated. It is found that the order of magnitude of the laser light gradient force is greater than that of the main force of the haze particle, and the laser light gradient force can completely destroy the equilibrium system of the haze particle. Therefore, it is feasible to eliminate haze by laser light gradient force. This new solution to haze is of great significance to people's real life, environmental protection and the creation of beautiful blue sky.
【作者单位】：西安交通大学机械工程学院;四川理工学院机械工程学院;
【分类号】：X513

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