Method for estimating and controlling suspension and residence of liquid drops

The invention discloses a method for estimating and controlling suspension and residence of liquid drops. The method comprises the following steps: coupling an ultrasonic nonlinear sound field with a two-phase flow field; discretizing the control equation by using a finite difference method and a lattice Boltzmann method; according to the input ultrasonic sound source parameters, the liquid drop parameters and the volume, calculating to obtain a mutual influence rule of a sound field and a liquid drop material; and obtaining suspension position and form information of the droplet material. Compared with a traditional simplified estimation method and an experiment attempt method, the invention has the advantage that the suspension position and the suspension form of the liquid material in the ultrasonic field can be obtained more accurately at lower cost by utilizing a computer simulation method. According to the method, two-phase flow and a nonlinear sound field calculation model are combined; in the simulati