The piston effect in supercritical fluids investigated via a reversible–irreversible vector field splitting-based explicit time integration scheme

What is it about?

Supercritical fluids play more important role in technology, however, the reliable computation of the occurring strongly coupled thermomechanical processes is complicated. The work presents a time integration algorithm for thermoacoustic problems, such as the piston effect in supercritical fluids. The method is based on the splitting of the spatially semi-discretized time evolution generating vector field into reversible and irreversible parts, which can be integrated individually with a second-order accurate explicit method, resulting in a numerical solution nearly free from dispersion and dissipation errors, significantly increasing the reliability of the solution.

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