A theoretic numerical simulation of interaction between CME
ejecta and bimodal solar wind from solar surface to 30 solar radii has been presented. A comparison with an interaction between CME
ejecta with homogeneous and bimodal solar wind is given. The results show that the bimodal solar wind changes the topology of CME
ejecta with faster propagation speed away from the equator, and fast wind will energize the CME. Also the results of steady‐state bimodal solar wind
characteristics that extend to 1AU are presented.