中国物理B ›› 2004, Vol. 13 ›› Issue (7): 1065-1069.doi: 10.1088/1009-1963/13/7/017
余建华1, 黄吉平2
Huang Ji-Ping (黄吉平)ab, Yu Kin-Wah (余建华)a
摘要: Theoretical investigations on electrorheological (ER) fluids usually rely on computer simulations. An initial approach for these studies would be the point-dipole (PD) approximation, which is known to err considerably when the particles approach and finally touch each other due to many-body and multipolar interactions. Thus various works have attempted to go beyond the PD model. Being beyond the PD model, previous attempts have been restricted to either local-field effects only or multipolar effects only, but not both. For instance, we recently proposed a dipole-induced-dipole (DID) model which is shown to be both more accurate than the PD model and easy to use. This work is necessary because the many-body (local-field) effect is included to put forth the many-body DID model. The results show that the multipolar interactions can indeed be dominant over the dipole interaction, while the local-field effect may yield a correction.
中图分类号: (Electro- and magnetorheological fluids)