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Indexed by:期刊论文
Date of Publication:2022-06-29
Journal:大连理工大学学报
Affiliation of Author(s):建设工程学部
Volume:52
Issue:6
Page Number:809-815
ISSN No.:1000-8608
Abstract:A unstructured mesh finite volume LBM is presented. Cell-vertex finite
volume method is used to discretize the governing equations. During the
discretization in time, there are two-time steps, pseudo-time step and
real time step respectively, in which forward scheme is used in former
while the second order backward scheme is used in latter. In space, an
edge-based flux calculating algorithm is adopted and higher order TVD
scheme is utilized to calculate the flux through control volume
interface. A strategy of implicit iteration is used for solving discrete
governing equations and the second order five-layer Runge-Kutta method
is utilized for the solution of variables. The simulating results of 2D
cylindrical-Couette flow and lid-driven cavity flow show that the
proposed method is believed to be an effective tool for solving flow
pattern of flow domain with irregular boundary.
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