Based on the Fletcher's nucleation theory and the two-fluid model for homo-heterogeneous condensation

the effect of charge-effect on the condensing flow was discussed. The results show that the formula of the nucleation rate calculation with or without charge-effect both have high resolution. The calculated results are in good agreement with the experimented results and the relative error is not than 5%

indicating that the two-fluid model for homo-heterogeneous condensation has high precision. When the particle is not charged

the difference of supercooling in the flow field before and after the input of particles with 5nm radius is small. Although the input of 8nm and 10nm radius particles reduces the peak value of the supercooling as 2K and 7K respectively

it also causes the downstream migration of spontaneous condensation. When the particles are charged with a unit of electrical charge

i.e. Q=1e

the input of 5nm radius particles shows most obvious effect on decreasing the nucleation energy barrier and improving the heterogeneous nucleation rate. This effect becomes weaker and even weakest with the input of 8nm and 10nm radius particles respectively. As the charge rise up to three units of electrical charge

the input of 5nm and 8nm radius particles reduce the peak value of supercooling as 10K and 6K compared with homogeneous condensation respectively

which also obviously inhibit the occurrence of homogeneous condensation.