The Lattice Boltzmann Method of Non-Newtonian Flow in Couette Flow Satria Zidane Zainuddin, Muhammad Faizal Rafli, Irwan Ary Dharmawan.
Department of Geophysics, Faculty of Mathematics and Natural Science, Universitas Padjadjaran.
Abstract
The research aims to simulate the flow of non-newtonian fluid using the Lattice-Boltzmann method where this method is used to simulate computational fluid dynamic. Non-newtonian fluid is a type of fluid that flows without following Newton^s law of viscosity where the viscosity value is constant regardless of the influence of stress. In non-newtonian fluids, viscosity can change to become more liquid or solid because it is affected by force. In the case of non-newtonian fluids, an interesting thing that can be simulated is coutte flow where in fluid dynamics coutte flow is the flow of viscous fluid in the space between two surfaces.The concept ^couette flow^ refers to the flow of a viscous fluid between two surfaces in which one of them is moving tangentially to the other. The relative motion of the surfaces imposes a shear stress on the fluid and induces flow. The result from the Lattice Boltzmann Method simulation is a Non-newtonian fluid can move in couette flow with different flow velocity levels due to differences in power law index values.
