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Numerical Simulation of Sudden Contraction Flow for Viscoelastic Fluids with the Lattice Boltzmann Method

Qing Yao, Wang-Jun Zhou, Yong Li, Lu-Wu He
2017 Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)   unpublished

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In this paper, based on the lattice Boltzmann method (LBM) and the Oldroyd-B model, the decoupled solving method for the incompressible Navier-Stokes equation and advectiondiffusion constitutive equation and the boundary processing formats are given. The flow of viscoelastic fluid in the planar 3:1 contraction channel is simulated. For different Reynolds numbers Re, Weissenberg numbers Wi and viscosity s, the streamline patterns, the positions of vortex center and the length of vortex are
more » ... ned, and the influences of these parameters on flow behavior are discussed. The numerical results also present that the decoupled solving method is feasible and the LBM has fine accuracy and stability.
doi:10.2991/mme-16.2017.139 fatcat:gygygqty7zc6ffr4e5cvmazucu
Citation

Qing Yao, Wang-Jun Zhou, Yong Li, Lu-Wu He. "Numerical Simulation of Sudden Contraction Flow for Viscoelastic Fluids with the Lattice Boltzmann Method." Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016) (2017)