Finite Difference Lattice Boltzmann Method for Incompressible Navier-Stokes Equation Using Acceleration Modification

スポンサーリンク

概要

• 論文の詳細を見る

• An improved finite difference lattice Boltzmann method (FDLBM) is developed to simulate incompressible flows. The basic idea is to decrease the density fluctuation which might lead to compressible error in the flows with high pressure gradient or high speed motion. The equation of state is modified by including the attractive and repulsive forces between particles to adjust the compressibility of fluid. This effect is incorporated by applying acceleration modification which is deduced based on macroscopic dynamics. Using this method the sound speed of the fluid can be also controlled easily. Numerical simulations of steady Poiseuille flow and unsteady Womersley flow were adopted to validate our model. The results show that the proposed model is much more efficient than the conventional LBGK method when solving the incompressible flows with high pressure gradient.

• 一般社団法人 日本機械学会の論文

著者

• Tsutahara Michihisa

  Graduate School Of Engineering Mechanical Engineering Kobe University

• WU Long

  Graduate School of Science and Technology, Kobe University

• TAJIRI Shinsuke

  Graduate School of Science and Technology, Kobe University

関連論文

• Performance Improvement of Ship Propulsion Equipment Driven by Injecting Moist Air
• Direct simulation of Aeolian tones emitted from a circular cylinder in transonic flows using the finite difference lattice Boltzmann method
• A Study of Turbulence Simulations Using Finite Difference Lattice Boltzmann Method
• An Improved Lattice Boltzmann Model for Immiscible Fluids
• Finite Difference Lattice Boltzmann Method for Incompressible Navier-Stokes Equation Using Acceleration Modification
• Direct Simulation of the Aeolian Tone by the Finite Volume Lattice Boltzmann Method on Unstructured Grid

スポンサーリンク