Abstract
In this study, the boundary element method, which has been established for the viscous incompressible fluid motion, is modified and extended to capture the compressible fluid state. The velocity–vorticity formulation of the time dependent set of equations is employed, where the kinematics is given with the Poisson velocity vector equation, while the kinetics is represented with the vorticity transport equation, and the pressure field function is governed by the Poisson pressure scalar equation. The method is applied to consider buoyancy driven flow in closed cavity, differentially heated under large temperature gradients. The ideal gas law is used and viscosity is given by Sutherland law.
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