NANO-SIZED PARTICLE GENERATING METHOD FOR CONTROL OF BOUNDARY LAYER OF SUBMERGED BODY

摘要

PURPOSE: A manufacturing method of nanoparticle for controlling boundary layer of submerged body is provided to reduce turbulence intensity and frictional resistance by changing characteristics of boundary layer of the submerged body. CONSTITUTION: A manufacturing method of nanoparticle for controlling boundary layer of submerged body comprises next steps: spraying NaCl or DEHS solution by using an atomizer(1); manufacturing polydisperse nano particles; eliminating moisture of the polydisperse nano particles by diffusion dryer(2); electric charging the moisture removed polydisperse nano particles to positive charge or negative charge; applying voltage to the polydisperse nano particles by using DMA(differential mobility analyzer)(4) in order to manufacture monodispersed nano particles with a uniform-size; bring the monodisperse nano particles into a submerged body(6); and measuring concentration of the monodisperse nano particles by using APS(aerosol particle sizer);(5).