期刊名称：Journal of Computational Science and Technology
电子版ISSN：1881-6894
出版年度：2008
卷号：2
期号：2
页码：330-340
DOI：10.1299/jcst.2.330
出版社：The Japan Society of Mechanical Engineers
摘要：A lattice Boltzmann method (LBM) for two-phase viscoelastic fluid flows is proposed. The method is mainly an extension of the LBM for two-phase flows with large density differences proposed by Inamuro et al. [ Journal of Computational Physics Vol. 198, No. 2 (2004), pp. 628-644]. The viscoelastic effects are introduced by the constitutive equation based on the Maxwell model, which has a spring and a dashpot connected with each other in series. The method is applied to simulations of a drop under shear flow in viscoelastic fluids and of a bubble rising in viscoelastic fluids. In the simulation of drop deformation under shear flows, the effects of viscoelasticity on the deformation and orientation angle are evaluated. In the simulation of bubble rising in viscoelastic fluids, a cusp configuration at the trailing edge is investigated and compared with the theoretical prediction and other numerical results.
